The Curious Engineer

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SatTrackCam Leiden (b)log

sattrackcam.blogspot.com

classified military Space (spy satellites) and Missiles

Science

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1,024 from 5 Aug 2005 to 25 Oct 2026
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2026 11

  1. A Russian SLBM test in the Arctic
  2. [UPDATED] KOSMOS 2612 and ICEYE-X36: a worrisome cat-and-mouse-game in Space
  3. A French SLBM test in the Atlantic
  4. RASSVET (2nd batch): Reports of my Death have been Highly Exaggerated
  5. The reentry of Starlink-1541 over the northern Netherlands on 24 July 2026
  6. Imaging the oldest pieces of Space Debris still on orbit using the TU Delft MISO telescope
  7. Tracking the Artemis II Lunar mission using TU Delft's MISO telescope
  8. Guest in the Euronews podcast "Tech talks"
  9. The observed reentry of the Chinese CZ-2C upper stage 2018-054D over Australia on 28 February 2026
  10. Another failed deorbit of a Falcon 9 upper stage
  11. [UPDATED] You Only Die Twice (redux): the unusual and confusing double reentry of a ZQ-3 upper stage (2025-282A)

2025 23

  1. NROL-77, probably a new NOSS (or maybe not)
  2. BRIK-II is no more
  3. [MULTIPLE UPDATES] Possible Space Debris found near Newman, Australia on Oct 18, might be Jielong 3 upper stage remains
  4. [UPDATED] Identifying a reentry over the Canary Islands on 16 October as the reentry of the Chinese satellite Xinjishu Yanzheng 7 (XJY-7)
  5. A Trident-II D5 SLBM launch in the Atlantic on 21 September 2025: analysis of footage from Puerto Rico (UPDATED)
  6. X-37B OTV 8 and Limasat (the USSF-36 payloads) imaged
  7. X-37B Spaceplane mission OTV 8 located on orbit
  8. An upcoming Hypersonic Missile Test (repeat of FT-3) from Kodiak to Kwajalein [UPDATED]
  9. The upcoming launch of the X-37B Spaceplane mission OTV 8
  10. The SatTrackCam (B)log is 20 years old!
  11. RPO Galore: the complex proximity operations of Kosmos 2581, Kosmos 2582, Kosmos 2583 and 'Object F'
  12. Kosmos 2558 released an object on orbit on June 26 [UPDATED]
  13. The reentry of the Chinese Zhuque-2E upper stage 2025-103G over Kazachstan on 5 June 2025
  14. Raiders of the Lost Venus Probe: a post-mortem of an interesting reentry and the confusion it left
  15. Kosmos 2588 has been placed in the same orbital plane as the US spy satellite USA 338: another RPO?
  16. The tumbling behaviour of the mysterious Kosmos 2553 satellite
  17. Kosmos 482 Descent Craft reentry forecasts [PERIODICALLY UPDATED]
  18. Observing FRAM-2, a commercial crewed Dragon mission in Polar orbit
  19. USA 498, the NROL-69 payload, found
  20. The Russian eavesdropping satellite LUCH (OLYMP-K) 2 has moved significantly
  21. The reentry of a Falcon 9 upper stage over NW Europe on 19 February [UPDATED]
  22. The North Korean satellite Malligyong-1 manoeuvered again, and this time it is different
  23. Possible Space Debris impact in Kenia: a piece of the Ariane SYLDA 2008-034C? [updated]

2024 41

  1. X-37B Spaceplane OTV 7 to lower orbit by aerobraking
  2. A Chinese ICBM test launch at full range, into the central Pacific, on September 25
  3. The Russian SIGINT satellite LUCH (OLYMP-K) 2 has moved again
  4. The North Korean satellite Malligyong-1 has manoeuvered again
  5. ACS 3 appears to be tumbling or gyrating
  6. The Advanced Composite Solar Sail System 3 (ACS 3) observed after sail deployment [UPDATED]
  7. More X-37B spaceplane OTV 7 observations
  8. Recovery of the X-37B spaceplane OTV 7
  9. The Russian SIGINT satellite LUCH (OLYMP) 2 has arrived at its new destination, next to THOR 7
  10. LUCH (OLYMP) 2 is on the move again [UPDATED]
  11. The North Korean satellite Malligyong-1 raised its orbit again early June
  12. The Chinese robotic Space Plane 3 and Object G: proximity operations [MULTIPLE UPDATES]
  13. Gazing in my crystal ball: at what time will North Korea launch Malligyong-2? [UPDATED]
  14. New North Korean launch (Malligyong-2) upcoming [UPDATED]
  15. The NROL-146 payloads: observing the 'train' of 21 Starshield satellites
  16. The Russian KOSMOS 2576 launch of May 16, and USA 314: another 'inspector satellite'? [UPDATED]
  17. Upcoming test of a Conventional Prompt Strike (CPS) hypersonic missile
  18. A Russian Optical Reconnaissance satellite launch from Plesetsk upcoming [UPDATED TWICE]
  19. A glimpse of the ACS 3 Solar Sail bus
  20. OT: The beautiful Aurora of May 10, 2024
  21. Imaging North Korea's new satellite Malligyong-1
  22. Dark moves at Geosynchronous altitude: Mentor 6 and Luch (Olymp) 2 have repositioned
  23. Mentor 10 (USA 353), the NROL-70 payload, likely found near 98 E [UPDATED]
  24. Manoeuver moments of the North Korean reconnaissance satellite Malligyong-1
  25. Russian ICBM test launch (Topol?) from Kapustin Yar seen from the Middle East
  26. A possible French Missile test over the Gulf of Biscaye on April 10-11 [UPDATED]
  27. NROL-70, likely an ADVANCED ORION satellite
  28. NROL-123
  29. Reconstructing the approximate reentry and disintegration position of Starship FT3 [UPDATED]
  30. Starship Flight Test 3 upcoming
  31. A so far unidentified object in GEO near PAN and Eutelsat Hot Bird 13B [UPDATED]
  32. The ISS EP9 battery pack observed on its last revolution before reentry
  33. A perigee-raising manoeuvre by the North Korean satellite Malligyong-1
  34. January UK Trident-II D5 SLBM test failed
  35. Nukes in Space?
  36. USSF-124, launching the Hypersonic and Ballistic Tracking Space Sensor
  37. Imaging the X-37B robotic spaceplane mission OTV 7
  38. X-37B OTV 7 has been found in HEO!
  39. An upcoming Russian SSO launch from Plesetsk
  40. An upcoming British Royal Navy Trident SLBM test in the Atlantic [UPDATED]
  41. 2023 at a glance

2023 39

  1. A Missile Defense Test in the NE Pacific on December 11-16 (FTG-12?)
  2. Navigational Warnings for USSF-52 (X-37B OTV 7) have appeared [UPDATED]
  3. North Korea's Malligyong-1 satellite and imaging Guam [UPDATED]
  4. North Korea successfully launches the Malligyong-1 reconnaissance satellite
  5. North Korea to try a third time to launch its Chollima-1 rocket and Malligyong-1 satellite coming days [UPDATED]
  6. Where did Starship fragments end up after its in-flight destruction? [UPDATED]
  7. New Starship launch attempt on November 17 approved by FAA [updated]
  8. Boldly going where no spaceplane has gone before? New X-37B mission OTV 7 to launch in December
  9. Imaging Navigation Satellites
  10. Delfi-C3 reentry forecast updates (periodically updated post)
  11. An upcoming French SLBM test in the Atlantic, ARRW, and a failed Minuteman test in the Pacific
  12. A Goodbye to Delfi-C3
  13. [UPDATED] A possible Missile Defense Test from Hawaii on October 25-29 (FTM-32?) and another LRHW test from Cape Canaveral
  14. Did Russia position a geostationary satellite over Israel last month? No.
  15. Paper in Nature on the high optical Brightness of the BlueWalker 3 satellite
  16. PAN is on the move again
  17. The upcoming (?) reentry of Kwangmyŏngsŏng 3-2 (KMS 3-2), North Korea's last remaining satellite
  18. Firefly Alpha 'Victus Nox' Rapid Response launch [UPDATED]
  19. Recovering USA 310, PAN and Trumpet 2
  20. A new test attempt of the LRHW hypersonic missile from Cape Canaveral
  21. A new North Korean satellite launch attempt upcoming [UPDATED]
  22. The reentry of a Soyuz rocket stage over southern Australia on August 7
  23. [UPDATED] North Korea's KMS 4 has only a few days left on orbit
  24. UPDATED: Ceci n'est pas une pipe... (French and US missile tests in the Atlantic in June)
  25. UPDATED : North Korea announces satellite launch for May 30 - June 10
  26. Gearing up for a new North Korean satellite launch
  27. Calibrating tracking astrometry accuracies using SWARM as calibration objects
  28. An upcoming Russian IRBM missile test on April 20-29
  29. Optically observing the RNLAF's 6U cubesats BRIK-II, HUYGENS and BIRKELAND
  30. An upcoming French SLBM test in the Atlantic [UPDATED]
  31. The STARSHIP inaugural launch is near! [UPDATED]
  32. Missile Spring [updated multiple times]
  33. Another Hypersonic glider test (likely AGM-183A ARRW) upcoming, in the Pacific [updated]
  34. Checking up on high-altitude objects
  35. A possible (hypersonic?) missile test from Cape Canaveral [UPDATED]
  36. Tracking the Dark Side on a shoestring budget
  37. The reentry of the second stage of LauncherOne "Start me Up" seen from Lanzarote
  38. A first launch to orbit from Northwest Europe on January 9 [UPDATED]
  39. 2022 at a Glance

2022 27

  1. The North Korean Medium Range Missile test of October 3rd
  2. PAN is moving back westwards again
  3. A pass of China's Space Plane
  4. USA 338, the NROL-91 payload, observed
  5. NROL-91: a new (possibly electro-optical) sister ship of USA 290
  6. Kosmos 2558 keeping its orbit close to USA 326 [UPDATED]
  7. Will China's second 'Space Plane' land on August 15? (UPDATE: No, it didn't)
  8. The flyby of USA 326 by Kosmos 2558 on August 4: a post-analysis
  9. Observing China's Re-usable Test Vehicle (or "space plane")
  10. A stalker and its prey (Kosmos 2558 and USA 326)
  11. Kosmos 2558, a Russian inspector satellite targetting the US IMINT satellite USA 326?
  12. CZ-5B rocket stage 2022-085B: reentry forecasts
  13. A failed US missile test on July 7
  14. Rearrangements in the USA 328 - 331 'train'
  15. Observing newly launched USA 328, USA 329, USA 330, USA 331 and a Falcon 9 debris piece
  16. A covert launch on June 19? [UPDATED]
  17. Some personal news: Lecturer in optical Space Situational Awareness
  18. Observing the Boeing CST-100 Starliner OFT-2 and the ISS just hours before docking.
  19. Kosmos 482: questions around a failed Venera lander from 1972 still orbiting Earth (but not for long)
  20. USA 327 / NROL-85
  21. A surprisingly bright flare from a 6U Cubesat
  22. NROL-85 observed, but is it an INTRUDER/NOSS or something else? [UPDATED]
  23. NROL-85: probably NOSS 3-9, a new pair of INTRUDER Naval SIGINT satellites
  24. North Korea's Hwasong-17 ICBM: capable of (briefly) bringing warheads into orbit?
  25. This week: rainshowers with a slight chance of falling satellites
  26. The upcoming classified NROL-87 launch
  27. The North Korean Hwasong-12 test of 29 January 2022

2021 36

  1. Some first analytical results on the debris from the Russian ASAT test of 15 November 2021
  2. The Russian Federation conducted a destructive ASAT test on Kosmos 1408 on November 15 [updated]
  3. PAN/NEMESIS 1 is still drifting
  4. The Chinese space plane test of 16 July 2021: orbital, not suborbital?
  5. A Chinese FOBS surprise (and other stuff of nightmares) [UPDATED]
  6. Spectacular deorbit burn / fuel dump from the Landsat 9 Centaur upper stage observed
  7. Inspiration4 Crew Dragon over the old Leiden Observatory
  8. An upcoming Trident-II D5 SLBM test in the Atlantic
  9. PAN (NEMESIS 1) is on the move again
  10. An Asteroid for Alice
  11. First positive observations of the LED beacon of the NAPA-2 6U cubesat
  12. A weird Navigational Warning for a mass deorbit on August 9-10? [updated]
  13. Proton-M rb (2021-066B) reentry forecast (updated)
  14. Nauka and it's Proton-M rocketbooster
  15. A possible missile test (AGM-183 ARRW, or not?) in the Pacific on July 10
  16. Imaging objects from the 'Tubular Bells' launch
  17. OT (but missile related): on Ian Fleming, Bond, and the fictional Moonraker ICBM
  18. Navigational Warnings have appeared for the launch of the first Dutch military satellite, Brik-II [UPDATED]
  19. An intriguing apparent Missile Defense (?) test from Kodiak and Kwajalein [UPDATED: hypersonic, not Missile Defense]
  20. USA 224 has manoeuvered
  21. Observing TacRL-2/Odyssey and it's Pegasus upper stage
  22. NROL-111 and TacRL-2: two upcoming classified launches [UPDATED]
  23. From what altitude does space debris drop vertically?
  24. The front group of Starlink V1.0 - L26
  25. SBIRS GEO 5 Centaur fuel blowout imaged from Australia
  26. Reentry predictions for the Chinese CZ-5B rocket stage 2021-035B [UPDATED]
  27. USA 314 (NROL-82) imaged
  28. An upcoming French ICBM/SLBM test [UPDATED TWICE]
  29. NROL-82: an upcoming new KH-11 EVOLVED ENHANCED CRYSTAL launch [UPDATED]
  30. LUCH (Olymp-K), an eavesdropping SIGINT snooping around commercial comsats
  31. [UPDATED] Cosmic Ballet: approach of MEV-2 and Intelsat 10-02 imaged
  32. [UPDATED] Reentry predictions for the Falcon 9 RB 2021-017BN
  33. Apparent failed deorbit of the Starlink-18 Falcon 9 upper stage [UPDATED]
  34. A possible (now CONFIRMED) Trident-II SLBM test launch between February 9 and 14, 2021 [UPDATED]
  35. Virgin Orbit to launch first satellite for the Royal Dutch Air Force this year
  36. First optical observations of the NROL-108 payloads USA 312 and USA 313

2020 41

  1. Seasons Greetings!
  2. NROL-108: another mystery launch perhaps similar to NROL-76 (USA 276)? [UPDATED]
  3. USA 310 (NROL-101) and it's Centaur on 25 November
  4. Brightness variation of the NROL-101 Centaur upper stage from video observations
  5. Tracking objects in MEO from the NROL-101 (USA 310) launch [updated]
  6. SM-3 Block IIA Missile Defense test FTM-44 against an ICBM-class target imminent, 17-19 November 2020 [UPDATED]
  7. Crew Dragon-1
  8. NROL-101: probably a HEO mission [or maybe not! See update at bottom]
  9. North Korea's October ICBM surprise
  10. No, this reentry footage is not a fireball that appeared over Mexico on September 6/7
  11. A very unusual fireball over NW Europe on 22 September 2020 (that went in and out of the atmosphere again)
  12. Observing the mysterious "Object A" (2020-063G), left in orbit by China's 'Spaceplane'
  13. The structure of Space (2): formation of a geosynchronous ring
  14. Important update of my SkyTrack software [UPDATED]
  15. China launches a 'Reusable Experimental Spacecraft' - a Space Plane? [UPDATED MULTIPLE TIMES]
  16. 15 years of the SatTrackCam (b)log!!!
  17. NROL-129 payloads located on-orbit
  18. OT: Comet C/2020 F3 NEOWISE
  19. ISS Debris Avoidance Manoeuvre of 3 July 2020
  20. A French M51 SLBM test with a 6000 km range on June 12
  21. SkyTrack: a simple tool to calculate satellite positions and visuallize satellite trajectories in Google Earth
  22. Introducing a new web resource: Launchtower
  23. Imaging a pass of the Crew Dragon Demo-2, and a close fly-by of the Crew Dragon by USA 245! [UPDATED]
  24. New attempt to launch the Crew Dragon on May 30: trajectory
  25. Imaging some splendid passes of HTV-9 (Kounotori-9) and Cygnus NG-13
  26. The trajectory of the upcoming Crew Dragon Demo-2 launch, returning the US to crewed spaceflight
  27. [UPDATED] OTV 6 (USSF 7), the next X-37B launch, appears to go into a 44-degree inclined orbit
  28. The Kosmos 482 Descent Craft: imaging an old Soviet Venera probe stuck in Earth orbit
  29. Imaging the new Iranian satellite NOUR 1 (2020-024A) [UPDATED triple]
  30. Guest Post: Modelling of Starlink trail brightness and comparison to observations
  31. The reentry of the Soyuz r/b 2020-026B over Spain and Portugal
  32. Starlink Galore! [UPDATED]
  33. Starlink "train" photographed from the International Space Station
  34. One year after India's ASAT test
  35. SpaceX's Starlink Darksat is, indeed, darker
  36. Dragon CRS-20, 23 minutes after launch, with thruster firings
  37. Launching cubesats from the X-37B OTV 5: lifetime modelling with GMAT
  38. Iran's failed Zafar launch: where did it go?
  39. California 30 January 12:30 UT: the "space debris" reentry that wasn't
  40. Testing a new lens for GEO and HEO (SamYang 2.0/135 mm)
  41. Imaging Starlink 2

2019 25

  1. Nine months after the Indian ASAT test: what is left?
  2. The stars did not align well for Starliner, it seems
  3. An interesting CRS-19 Falcon upper stage deorbit area (UPDATED)
  4. A reanalysis of the Trident SLBM test of 10 September 2013 and other tests
  5. The structure of space: orbital families
  6. Six months after India's ASAT test
  7. Image from Trump tweet identified as imagery by USA 224, a classified KH-11 ENHANCED CRYSTAL satellite
  8. The Chinese ICBM test of August 7 [UPDATED]
  9. The Mating Call of the CUCU [updated]
  10. X-37B fact and fiction
  11. Two-and-a-half months after the Indian ASAT test: What's Up?
  12. [UPDATED] Erratic orbital evolution of four Starlink objects
  13. Numbers: the SpaceX Starlink constellation in perspective with what is currently orbiting earth
  14. WOWOWOW!!!! A SPECTACULAR view of the SpaceX Starlink satellite train!
  15. Orbital Reflector has joined the Dark Side
  16. Why India's ASAT test was reckless (updated)
  17. First debris pieces from the Indian ASAT test of 27 March catalogued
  18. Why even low altitude ASAT intercepts are a threat to operational satellites in higher orbits
  19. An earlier, failed (?) ASAT test by India on 12 February 2019
  20. Debris from India's ASAT test: how long until it is gone?
  21. India's surprise ASAT test of 27 March 2019 (updated)
  22. No, the failed Venus lander from Kosmos 482 is not about to come down yet
  23. USA 290 (NROL-71)
  24. Doppler curves
  25. Fireball seen over New Zealand during cricket match was the reentry of Kosmos 2430 (2007-049A)

2018 33

  1. NROL-71: an enigmatic launch [UPDATED]
  2. Modelling the expected orbital lifespan of Orbital Reflector [UPDATED]
  3. Falcon 9 reentry burn from SAOCOM 1A launch observed from Europe
  4. More images of Kounotori (HTV) 7
  5. Imaging a pass of Kounotori (HTV) 7 on it's way to the ISS
  6. Capturing a flaring NOSS duo (NOSS 3-6)
  7. The X-37B OTV 5 is manoeuvering to a higher orbit
  8. OT: the bright fireball of 29 June 2018, 21:30:14 UT
  9. Capturing a pass of the X-37B OTV-5, and imaging an ISS transit over the Sun
  10. OT: The brilliant "Pinkpop" fireball of 16 June 2018 (UPDATED)
  11. Orbital ATK's Cygnus AO-9 cargoship chasing the ISS
  12. Pinpointing the OTV 5 orbital manoeuvre on 19 April 2018
  13. OTV 5 or Zuma? A brief explanation why this object is OTV 5 and not Zuma
  14. Imaging the X-37B Space Plane OTV 5 post-manoeuvre
  15. X-37B OTV-5 mission located on orbit
  16. Updated Tiangong-1 reentry forecasts (updated April 2)
  17. The atmospheric reentry of the Soyuz upper stage 2018-026B on March 25
  18. The reentry of Humanity Star (updated)
  19. One month left for Tiangong-1 [UPDATED]
  20. On PBS Newshour, about Open Source investigation of the North Korean missile program
  21. Imaging FLOCK 2E 4 near decay
  22. UPDATED: TLExtract 3.5
  23. UNID galore! Locating Govsat-1
  24. STARMAN (Falcon Heavy/Tesla Roadster) 2018-017A imaged in Space
  25. There's a Starman Waiting in the Sky
  26. The flashing behaviour of USA 81 (1992-023A)
  27. Meet the amateur astronomers who track secretive spy satellites for fun
  28. TOPAZ/FIA Radar 5, the NROL-47 payload
  29. [Updated] A potential use for satellites in Zuma-like 50-degree inclined orbits
  30. What is NROL-47 and in what orbit will it be launched? [updated twice]
  31. Fuel dump of Zuma's Falcon 9 Upper Stage observed by a Dutch pilot over east Africa (and rumours that Zuma failed)
  32. A new launch attempt for ZUMA [updated twice]
  33. 2017 in a nutshell

2017 33

  1. Effects of December 26 Russian TOPOL RS-12M ICBM test also seen from the Netherlands
  2. [UPDATED] Where to hide your nuclear missile submarine? (but be quick)
  3. Objects from the Ariane VA240 launch (Galileo 19, 20, 21, 22) observed from the Netherlands [UPDATED]
  4. The Curious Incident of the ICBM that Launched by Night
  5. Introducing TLE from Proxy
  6. [UPDATED] Tomorrow's SpaceX Zuma launch
  7. Introducing IOD Entry: software to aid observers in creating IOD formatted observational data [UPDATED]
  8. The Space Age turns 60
  9. The North Korean Hwasong-12 test of 14 September: georeferencing Kim Jong Un's map
  10. OT: The brilliant fireball over the Netherlands of 21 September 2017, 19:00 UT, a piece of comet Encke
  11. OT: imaging the close flyby of Amor asteroid (3122) Florence
  12. The other subliminal message in Kim Jong Un's missile test map
  13. North Korea's 29 August Hwasong-12 test with Japan fly-over: did it go as planned?
  14. [UPDATED] My take on North Korea's hypothetical threath to Guam
  15. North Korea's July 28 ICBM test
  16. Close Encounters of the Classified Kind
  17. OT: Broek in Waterland, the sixth Dutch meteorite (observed fall, 11 January 2017)
  18. [UPDATED] Close Encounters of the Classified Kind: a post-event analysis of the close approach of USA 276 to the ISS on June 3
  19. Cygnus OA-7 and Dragon CRS-11 chasing the ISS in a twilight sky
  20. The Plot Thickens (Ball Aerospace, USA 276, RAVEN and the ISS)
  21. [UPDATED] USA 276 (the NROL-76 payload) and the ISS near DRAGON CRS-11 berthing.
  22. Analysis: The re-entry of the CZ-4B r/b 2014-049C observed by a Dutch pilot on May 27 [UPDATED]
  23. The range of North Korea's Hwasong-12
  24. Brightness variation of USA 276 (NROL-76)
  25. Observing USA 276, the odd NROL-76 payload
  26. Updating the changing tumble period of the USA 144 decoy
  27. What is NROL-76 and what orbit wil it be launched into?
  28. VIDEO: the ISS Fabric Shield (again), and North Korea's Kwangmyongsong-4
  29. The ISS Fabric Shield accidentally released from the ISS imaged in orbit
  30. NOSS 3-8 (NROL-79) components now close to operational separation
  31. NOSS 3-8 (NROL-79): Dancing in the Dark
  32. USA 186 recovered
  33. Tracking NROL-79, a new NOSS duo

2016 36

  1. OT: the slow, 13.8 second duration earthgrazing fireball over the Netherlands of 28 Nov 2016, 04:40 UT
  2. SIGINT Galore!
  3. Reshaping this blog
  4. Chinese CZ-11 rocket stage impacts Myanmar Jade quarry (updated)
  5. A NEMESIS in the sky: PAN, Mentor 4 and close encounters of the SIGINT kind
  6. The fabrications of Masami Kuramoto (again on MH17 and the suspect Russian MoD pictures)
  7. SpaceX Dragon CRS-9 chasing the ISS in the sky
  8. Reentry of Soyuz rocket upper stage from Progress MS-03 launch seen from New Zealand, 19 Jul 2016
  9. MUOS 5 stuck in GTO
  10. Tracking MUOS 5 in GTO [UPDATED]
  11. USA 224 recovered: an update of the KH-11 constellation
  12. Mentor 7 (NROL-37) stopped drifting at 102.6 E
  13. MUOS 5 GTO insertion and Centaur fuel dump imaged from Australia
  14. Updated orbit for Mentor 7 (NROL-37 payload)
  15. Mentor 7, the NROL-37 payload, found
  16. Geostationary bonanza
  17. More on the Hitomi/ASTRO-H breakup
  18. USA 186 rising, and revisiting the KH-11 constellation
  19. Hitomi (ASTRO-H) scientific X-ray satellite suffered an orbit-altering event
  20. MUOS 4 recovered at 75 E
  21. Imaging a "UFO" (Ultra High Frequency Follow-On)
  22. The tumble period of the UNHA-3 upper stage from the recent North Korean launch is slowly changing
  23. [UPDATED] MUOS 4 has been moved to its operational position at 75 E
  24. Imaging North Korea's new Kwangmyŏngsŏng-4 satellite, and the flash period of its UNHA-3 rb
  25. A consolidated answer to "Masami Kuramoto" about Resurs P1
  26. Continuing to track NROL-45 (FIA Radar 4)
  27. Observing NROL-45 (FIA Radar 4/TOPAZ 4) 18 hours after launch
  28. Inconsistent DPRK versus JSPoC orbit claims for Kwangmyŏngsŏng 4
  29. North Korea has launched Kwangmyŏngsŏng 4
  30. [UPDATED] North Korea's upcoming satellite launch
  31. Back to basics: AEHF 2 and SBIRS GEO 2 imaged
  32. MH17: On the Resurs-P1 image with "BUK's near Zaroshchens’ke" (twice updated)
  33. The Parliament Hearing
  34. SIGINT, IMINT and MH17
  35. Parliament hearing MH17, 22 Januari 2016
  36. In Memoriam: Pierre Neirinck, 16 Aug 1926 - 3 Jan 2016

2015 36

  1. Something (a fuel leak?) happened to the Chang'e 3 booster (2013-070B) late September-early October
  2. Imaging Geostationary satellites, and PAN's past relocations
  3. Small unusual artificial object WT1190F will impact in a few hours [UPDATED with imagery of actual impact]
  4. Flight MH17, satellite data and yesterday's hearing of Dutch Parliament with the Dutch Safety Board
  5. Satellite observations and the Russian Metrojet crash in the Sinai [updated]
  6. OT - on Dutch TV about the close approach of asteroid 2015 TB145 ("Spooky")
  7. Chasing the new NOSS 3-7 pair (the NROL-55 payloads)
  8. [UPDATED] Imaging North-Korea's Kwangmyŏngsŏng-3 (KMS 3-2) satellite
  9. OT - the Lunar Eclipse of 28 September 2015 from Leiden
  10. MUOS 4 at its 172 W check-out location
  11. The slow, changing tumble of the USA 144 (Misty 2) decoy
  12. Observing Geostationary satellites from Indonesia
  13. The tumble periodicity of the Chang'e 3 upper stage (2013-070B) revisited
  14. Observing the Fregat upper stage with Galileo 9 and 10 manoeuvering into transfer orbit, just 22 minutes after launch
  15. Rapid tumbling of the Chang'e 2 r/b (2010-050B) and Rollercoaster orbital evolution
  16. 2013-070B (Chang'e 3 r/b): a tumbling rocket stage at one Lunar distance
  17. [updated] Aurora hunter images the last moments of the AVUM (4th stage) from the Sentinel-2A launch
  18. Tracking MiTEx 1
  19. [UPDATED] Why the Emergency Asteroid Defense Project (EADP) will not fly, imho
  20. Clio
  21. Tracking distant space debris: more Chang'e 2 r/b observations
  22. An 'asteroid' that wasn't: the Chinese Chang'e 2 upper stage (2010-050B) imaged at almost twice the Lunar distance
  23. Yet another ISS transit over the Sun
  24. Progress M-27M is down!
  25. [UPDATED] Progress M-27M re-entry predictions
  26. Another ISS solar transit
  27. KH-11 USA 224 recovered
  28. Movie: Dragon CRS-6, The Twilight Saga!
  29. SpaceX Dragon CRS-6 and debris pieces, twenty minutes after launch
  30. Chasing USA 186
  31. Prowler captured flaring again
  32. OT: another update on NEA 2015 CA40
  33. OT: An update on Near Earth Asteroid 2015 CA40
  34. OT: the discovery of Near Earth Asteroid 2015 CA40 (updated)
  35. ATV-5 'Georges Lemaitre' and the ISS chasing each other in a partly cloudy sky
  36. Observing HEO objects

2014 48

  1. Observing USA 259 (NROL-35)
  2. Analysis of the 2014-074B Soyuz r/b re-entry on 26 Nov 2014
  3. [UPDATED] Re-entry of Soyuz third stage 2014-074B from Soyuz-TMA 15M launch observed from the Netherlands and Hungaria.
  4. Live blog from ESOC, Darmstadt: Philae (Rosetta) Landing on comet Churyumov-Gerasimenko:
  5. Announcing a Live Blog from ESOC during the Philae landing on 67P/Churyumov-Gerasimenko
  6. Brightness variation of the USA 198 Centaur rocket stage on October 30, 2014
  7. USA 198 r/b passing the M33 galaxy
  8. Imaging the North Korean Kwangmyŏngsŏng (KMS) 3-2 satellite
  9. Observing HEO objects
  10. USA 186, bright and fast
  11. USA 186 manoeuvered on the 17th
  12. Rosetta's landing spot. In 3D. Woah!
  13. KH-11 USA 186 has stabilized its orbit
  14. [Updated] You Only Die Twice: the confusing end of the Russian Kosmos 2495 Kobalt-M spy satellite mission
  15. SBIRS, SIGINT and the MH17 tragedy (updated)
  16. A bounty of GEO satellites on June 21
  17. ISS transiting the Sun
  18. [UPDATED] Three UNID's in GEO/GTO/HEO/MEO, SBIRS GEO 2, and Lacrosse 5 has manoeuvered
  19. Prowler flaring
  20. Tracking USA 161
  21. Telescopically imaging the ISS (plus some deep-sky)
  22. Sorting out the confusion: USA 161 and IGS 8R
  23. [AGAIN UPDATED] USA 161 recovered (?) - and new ideas on changes in the KH system
  24. USA 224 recovered, USA 186 still drifting, and looking for GPS IIF-6 20 minutes after launch
  25. KH-11 USA 129 is missing, USA 186 has still not manoeuvered
  26. Imaging SWARM A and C
  27. [UPDATED & CORRECTED] Observing the SpaceX Dragon CRS-3, the ISS and two pieces of Dragon launch debris
  28. Progress M-22M in twilight
  29. Eagle Eyes
  30. [updated] The bright fireball over Germany of 31 March 2014, 22:34 CEST: an earthgrazing meteor, not a satellite re-entry
  31. Observing USA 184 (TRUMPET-FO/SBIRS-HEO)
  32. An update on the evolving KH-11 Keyhole/KENNAN/CRYSTAL system
  33. A flare show by USA 245
  34. First post winter-blackout observations of KH-11 Keyhole/CRYSTAL USA 129
  35. Open Question: Could US Military SIGINT satellites help to narrow down flight MH370's last location?
  36. On Dutch national TV, about lost flight Malaysian Airlines MH370 and satellites
  37. USA 245 now also recovered
  38. Satellites and Malaysian Airlines flight MH370
  39. What is wrong with this "picture of Aurora from Space"? Answer: everything!
  40. Imaging USA 186 after the winter blackout
  41. USA 186 is defying the schedule
  42. Mystery object in Alaska sky night Feb 20-21 was a fuel vent connected to the USA 248 (GPS 2F-05) launch
  43. An ISS transit over the moon, and supernova SN 2014J again
  44. USA 129 does a Mark Twain!
  45. OT - Supernova SN 2014J in Messier 82
  46. [UPDATED] USA 129 de-orbitted [NO!]? And USA 186 about to manoeuvre?
  47. ISS and Orbital-1 Cygnus, 5 hours before docking
  48. An unknown object in (near) Geostationary orbit: Express AM-5?

2013 51

  1. Guest post at ESA's Rocket Science blog
  2. USA 186 (Keyhole KH-11/Advanced CRYSTAL) is moving orbit, as expected
  3. Gaia launch event, Noordwijk SpaceExpo
  4. GOCE re-entry photographed from the Falklands?
  5. Alas, poor GOCE, I knew him well...
  6. Brief update on Goce (9 Nov): one day from reentry!
  7. Another brief update on #GOCE, 8 Nov 2013
  8. Brief GOCE update, 7 November
  9. Brief (semi-) daily GOCE update, 6 November
  10. GOCE update (5 Nov 2013)
  11. GOCE below 200 km - now one week or less from reentry
  12. About half-way: another short update on GOCE, 10 days after its engine cut off
  13. Tracking Prowler
  14. A Space Buff Watches 'Gravity'
  15. A short update on GOCE, five days after engine cut-off
  16. [Updated diagrams] GOCE is falling!
  17. Past and future of the KH-11 Keyhole/Evolved Enhanced CRYSTAL constellation (part 4)
  18. A farewell to GOCE
  19. ISS and Cygnus
  20. Hanging out with Astronauts: ESA/DLR's SocialSpace Cologne, 22 September 2013
  21. [UPDATED 2x] Visualizing the trajectory of the September 10 Trident missile test in the Atlantic
  22. More on the September 10 mid-Atlantic Trident SLBM test captured by astrophotographer Jan Hattenbach
  23. BREAKING: the September 10 La Palma event WAS a Trident missile test!
  24. You don't get to meet an astronaut every day
  25. [UPDATED: confirmed!] A clandestine launch in the Mid-Atlantic on Sep 10, captured by a German astrophotographer?
  26. Past and future of the KH-11 Keyhole/Evolved Enhanced CRYSTAL constellation (part 3)
  27. On USA 245 and USA 129, and the future of the Keyhole constellation: an afterthought to my previous post
  28. The orbit of USA 245 and the current KH-11 constellation
  29. More tracking of USA 245, and being flashed by ALOS
  30. Tracking USA 245 (NROL-65)
  31. USA 245 (NROL-65), the new KH-11 Keyhole, seen 3 hours after launch
  32. The "Piece of MIR" that quite probably isn't
  33. Fireball seen over Eastern Australia, 13 June 2013 6:05 pm AEST, was NOT the decay of Molniya 3-53
  34. ATV-4 and ISS, 15 hours before docking (and Progress too)
  35. Another fine pass of ATV-4, and objects from a recent Russian Persona launch
  36. Bringing the ATV to the ISS: a stepped process
  37. Images and video of ESA's Space Cargo Ship ATV-4 'Albert Einstein' over Leiden
  38. Tracking ESA's ATV-4 "Albert Einstein" the coming nights
  39. PAN has moved again [UPDATED]
  40. No, fragments of the Tunguska object have not been found - or at least there is no real positive proof of that
  41. PANSTARRS and Polar Light - Finland, March 2013
  42. PAN and Mentor 4 in March
  43. The discovery of asteroid 2013 GM21
  44. Movie: Why the Russian Super Meteor was not related to asteroid 2012 DA14 - explained with the help of an orange
  45. Filmpje: waarom de supermeteoor boven Rusland niets te maken heeft met planetoide 2012 DA14 - uitgelegd met behulp van een sinaasappel
  46. On national television about 2012 DA14 and the Russian super meteor
  47. [updated] HUGE fireball over Russia this morning! Not 2012 DA14 related.
  48. Fireball over NW Europe of the evening of 13 February 2013: Re-entry of a Soyuz r/b
  49. OT - a new telescope and imaging the moon
  50. Mapping a year of space debris re-entries
  51. 2012 in summary

2012 60

  1. The flashing behaviour of North Korea's tumbling Kwangmyongsong 3-2 satellite
  2. [UPDATED] A post-analysis of the N-Korean launch window, and N-Korean Spooks on my weblog?
  3. Video of my lecture (in Dutch) on Hunting for Asteroids and the Van der Bilt Prize ceremony, 10 November 2012
  4. UNID geosat Unknown 121118 is probably the classified SIGINT Mercury 1 (94-054A)
  5. PAN, other Geostationary satellites, and another UNID (this time Greg's)
  6. Greg's Nov 19th imagery of my geostationary UNID (UNK121118)
  7. An Unidentified geostationary object
  8. Belated: imaging ATV-3 late September
  9. Is it a bird, or a possible UNID satellite?
  10. Receiving the Dr J. van der Bilt Prize
  11. A sad loss for SatTrackCam - R.I.P. Pippi (our cat), 12 May 2006 - 30 Oct 2012.
  12. OT - My latest Asteroid Discovery, 2012 SM58
  13. [UPDATED] The 21 September fireball: a small Aten asteroid?
  14. More on the 21 September 2012 fireball: why it definitely was a meteor
  15. Imaging a near-zenith pass of the new NOSS 3-6 pair (NROL-36)
  16. Fireball over N-Europe on 21 September 2012, 21:45 GMT was likely NOT a reentry
  17. Europe's new weather satellite MetOp-B
  18. Tracking the new NOSS 3-6 (NROL-36) launched September 13th, and imaging USA 237 (NROL-15) and SDS 2-2
  19. Imaging MiTEx 2
  20. "Spying on the spooks" and other recent media coverage of my activities
  21. CBERS 2B flash pattern
  22. OT: night-sky time lapse, Dolomites
  23. ENVISAT and other satellites flaring over the Italian Dolomites
  24. The re-entry of IGS 1B on 26 July 2012
  25. A flashing GPS satellite (Navstar 39, USA 128)
  26. 30 (mostly) geostationary objects in one image
  27. OT: Near Earth Asteroid 2012 LZ1 fly-by imaged, June 15
  28. Visiting ESTEC for the #AndreTweetUp, an in-flight call with astronaut André Kuipers
  29. Update on IGS 1B (10 June 2012)
  30. PAN is on the move, and detection of an unknown object in near-GEO
  31. Voice reception (radio) of Soyuz TMA-04M bringing crew 31 to the ISS
  32. IGS 1B on 12 and 13 May
  33. An update on IGS 1B - a spy satellite about to reenter this summer
  34. April 20 Brazilian fireball was NOT the reentry of an Atlas Centaur r/b
  35. FIA Radar 2 (NROL-25) observed - with video
  36. OT: a multistation filmed meteor from 27 March - some results on the trajectory
  37. The Nanosail UNID (10-062X) and Lacrosse 5 brightness variation
  38. (video) A last view of ESA's ATV-3, with ISS, FIA Radar 1 and an old Russian Soyuz upper stage
  39. Video: ATV 3 'Edouardo Amaldi', a meteor, and the ISS this morning
  40. Brightness variability of the NOSS 3-3 Centaur Upper Stage (with video)
  41. Footage of ATV 3 passing in morning twilight of March 24
  42. Video of Metop-A (06-044A) flaring brilliantly
  43. Newly launched ATV 3 cargoship in twilight
  44. SAR Lupe 4 and USA 129 (pass footage)
  45. Footage of a pass of the KH-12 Keyhole optical reconnaissance satellite USA 129
  46. MiTEx 1, AEHF 1 and Prowler
  47. André Kuipers talking from Space
  48. Space debris lands in Brazil village
  49. Lacrosse 5
  50. The Iranian satellite Navid photographed
  51. FIA Radar 1 through the Pleiades, and Geostationary satellites in Orion
  52. Phobos-Grunt: a final TIP on where it came down
  53. More thoughts on the Phobos-Grunt reentry
  54. [Updated] Phobos-Grunt down over the southeast Pacific?
  55. Summary of current Phobos-Grunt reentry predictions (15 jan 11:00 UT)
  56. [Updated] Summary of Phobos-Grunt reentry predictions as off 14 Jan, 13:00 UTC
  57. Gearing up for the Phobos-Grunt reentry
  58. ISS, Prowler, and a flashing Vortex 1 rocket
  59. An iPad falling from "Space"?
  60. Cloud-hampered ISS pass of January 2nd, and deep twilight pass of January 3rd

2011 106

  1. Summary of 2011 observations
  2. Footage of the ISS with Andre Kuipers on board passing over Leiden, 30 December
  3. Further confusion on Saturday's Soyuz r/b reentry
  4. 11-078B Soyuz 3rd stage reentry: answers to some frequently asked questions
  5. [Updated] Breaking News: Decay of Soyuz r/b stage from André Kuipers' launch to ISS observed from the Netherlands!
  6. Observing Fobos-Grunt on 30 November
  7. Footage of a Fobos-Grunt pass
  8. NOSS 3-1 A & C no longer a pair, and Lacrosse 3 is missing
  9. The Lacrosse 5 "disappearance trick" captured on video
  10. If rescue fails, Fobos-Grunt will reenter soon
  11. First light of my WATEC camera - footage of Lacrosse 5 and the NOSS 3-4 duo
  12. Another close encounter of a rocky kind....: 2005 YU55
  13. Observing Geostationary Satellites from Leiden and Arizona
  14. ROSAT down over the Indian Ocean [RENEWED UPDATE]
  15. ROSAT reentry update (2)
  16. ROSAT reentry update
  17. Gearing up for ROSAT's re-entry, and an older observation of a Breeze-M tank near M31
  18. OT - 1883 Zacatecas observation of objects before sun were not 12P/Pons-Brooks fragments [updated]
  19. OT - Draconid observations from Northern Germany, 8-9 October 2011
  20. Another ROSAT observation
  21. Observing another doomed satellite: ROSAT
  22. Back to business - KH-12 USA 129, the STSS demo's and more
  23. Tracking stations along UARS final track - a reconstruction [UPDATED TWICE]
  24. UARS reentered over Samoa? [slightly updated]
  25. Could the reentry of UARS have been monitored from Space?
  26. "UARS crash" at Okotoks Alberta (Canada) now confirmed to be hoax
  27. False "UARS" video's
  28. UARS update 24 Sept (2) - so where did it crash?!?
  29. UARS update, 24 Sept (1)
  30. UARS reentry update, 23 Sept (5)
  31. UARS reentry update 23 Sept (4)
  32. UARS reentry update 23 Sept (3)
  33. UARS reentry update Sep 23 (2)
  34. UARS reentry update 23 Sept (1)
  35. Following uars related notam was posted
  36. UARS update, September 22 pm
  37. UARS update, Sept 22 am
  38. UARS update, September 21 pm
  39. Eternal circling of the sky - and a METOP-A flare
  40. Topex/Poseidon flaring
  41. UARS update 21 Sept am
  42. USA 129 with a Chinese rocket, and a failed attempt for a last view of UARS
  43. UARS re-entry Update (and Nanosail-D, and IGS 1B)
  44. Wednesday's fireball over the US southwest was not UARS
  45. USA 161 new orbit finally established
  46. Watch UARS - it's dropping!
  47. Twitter
  48. SBSS 1
  49. USA 161 playing hide-and-seek with observers
  50. SPECTACULAR flare by IGS 1B!
  51. USA 161: "The reports of my death are greatly exaggerated..."
  52. Rush hour on the Sagitta-Vulpecula border
  53. OT: comet 2009 P1 Garradd with the new 1.4/85 mm lens (updated)
  54. NOSS 2-1 (C) very bright
  55. KH-12 USA 161 de-orbited? [updated 02/09/2011]
  56. Progress M-11M, and a spectacular flare by IGS 1B
  57. Satellites far and near
  58. Nanosail-D: a pattern in the Chaos
  59. Nanosail-D flashing rapidly and brightly
  60. Perseid
  61. Some of my pictures on Wired.com
  62. Prowler
  63. An update on IGS-1B
  64. PAN, and the NOSS 3-5 duo
  65. Imaging geostationary satellites using a remote telescope [UPDATED]
  66. OT: more imagery of the earthgrazing asteroid 2011 MD
  67. OT: Close Encounters of a Rocky Kind (2011 MD)
  68. NanoSail-D: a brief note on how I construct these brightness curves
  69. NanoSail-D: evolution of the flash pattern during a pass
  70. NanoSail-D Galore
  71. Yet more bright NanoSail-D, and an unidentified object from the same launch
  72. More flashing NanoSail-D, and flaring KH-12 USA 224
  73. Nanosail-D: a spectacular show of bright flashes!
  74. PAN at its new slot at 45.0 E
  75. ISS over the Sun
  76. UNID-I 3 May 2011 = PAN [UPDATED]
  77. [UPDATED] Two Unidentified Geostationary Objects on May 3 and 4
  78. More on the IGS 1B fuel tank, and the (reduced) risk of it re-entering
  79. Yet another Japanese satellite failure!
  80. KH-12 USA 129 flaring: and IGS 1B again
  81. NROL-34 recovered!
  82. [UPDATED] Another Malfunctioned Spy Satellite is Coming Down - with Hydrazine onboard
  83. IGS 5r flaring, and more USA 129 KH-12 in perigee
  84. On the NROL-27 mission patch, and the satellites' geographic position at 30.4 West
  85. USA 227/NROL-27 at 30.4 W: a Gryphon in Hydra
  86. Bright and fast KH-12 USA 129 zapping through perigee
  87. Sense and non-sense about the X37-B "Space Plane"
  88. Lacrosse 2 is no more.....
  89. NROL-34: Odin and Frigga
  90. The International Space Station (ISS) crossing the sun
  91. Flaring Keyholes in a moonlit sky, and a BWGS meeting
  92. The March 19, 2011, "Super Full Moon"
  93. KH-12 USA 129 and a Chinese rocket stage (CZ-2C r/b) cruising up together
  94. A farewell view of Space Shuttle Discovery
  95. The ISS and Space Shuttle Discovery STS-133
  96. Twice the ISS
  97. It's geosat flare season! (1)
  98. Libya jamming Thuraya 2
  99. FIA Radar 1 and a flaring Topex near the Andromeda Galaxy
  100. NROL-27 patches
  101. Satellites near the Pleiades
  102. FIA Radar 1 flaring!
  103. The FIA Radar, USA 179 (SDS 3-3) and more
  104. OT - A Space related Patch?
  105. PAN (no longer drifting) on January 2nd 2011
  106. Summary of 2010 observations

2010 53

  1. OT: (3200) Phaethon, the Geminid meteor shower parent body
  2. A second NROL-41 (FIA Radar 1) patch
  3. When did PAN start to drift?
  4. A satellite in the "fish mouth" of Orion's nebula, and nine geosats in one image
  5. Mystery satellite "UNKNOWN 101208" is PAN!
  6. Recovering SDS 3-3 (USA 179) and following the UNKNOWN 101208 geosat
  7. Update on the UNID geostationary: Greg observed it too!
  8. Again Terra SAR-X and TanDEM-X, and a rich batch of
  9. [UPDATED] An unidentified Geostationary or GTO object
  10. PAN and other geostationary satellites in a frosty winter sky
  11. Terra SAR X and Tandem X flying in formation (and flaring!)
  12. Senegalese skies
  13. SDS 3-4 (USA 179)
  14. 2003 dreams and 2010 facts about the Future Imagery Architecture (FIA) satellites
  15. Again the FIA Radar 1 (NROL-41)
  16. At last the FIA Radar 1 (NROL-41), and the first images with the new Carl Zeiss Jena Sonnar MC 2.8/180
  17. BWGS meeting, 26 September 2010, and 2010 observations so far
  18. SJ-6F and SJ-12: Close Encounters of a Chinese kind
  19. Spectacular Keyhole appearances
  20. Again the USA 144 (Misty-2) Decoy brightness variability, with another specular glint
  21. Hollidays, Ötzi, a Deluge, and USA 179 (SDS 3-3)
  22. Continued monitoring of the brightness behaviour of the USA 144 decoy (99-028C)
  23. Manoeuvring KeyHoles and the flashing Iridium 33 wreckage
  24. Ozzie space junk dreams
  25. The brightness behaviour of USA 32 on 26 June
  26. Progress-M 04M, MSX, and Mentor 2
  27. The flash period of USA 81 on June 2nd (UPDATED with February 24 results)
  28. USA 202 and other geostationaries, and a stroboscopic show by USA 81
  29. USA 198 brightness behaviour: a belated 2nd report
  30. An IGS 1B flare, and Geostationary satellites again
  31. Geostationary Galaxy 11 flaring to mag +2.5
  32. Two naked eye flaring Geosynchronous sats
  33. Volcanic dust effects at last! Bishop's Ring on May 18th
  34. An unidentified object
  35. -5 KeyHole flare! (May 9th observations, Part I)
  36. Yet another nice USA 186 KeyHole flare
  37. Another Keyhole flare
  38. Aircraft-less skies, but is the volcanic dust really visible?
  39. Satellite rush hour
  40. Spring objects, a Keyhole manoeuvre and a flare of the IGS 5 rocket
  41. Early March observations and pulsing (?) brightness of the STSS Demo-1
  42. The Lacrosse 5 (05-016A) "disappearance trick": comparison of different occasions
  43. Chasing satellites through clouds and unusual brightness behaviour of the STSS Demo 2
  44. A magnificent view of the Space Shuttle Endeavour STS-130 and the ISS in tandem!
  45. Slowly uncovering more clues in the Misty-2/USA144 patch
  46. Again USA 200, and another Proton Breeze-M tank
  47. Mexican "impact" / fireball event is NOT due to Kosmos 2421 debris
  48. USA 200 and a Proton Breeze-M tank - UPDATED
  49. The weather at SatTrackCam Leiden
  50. GOCE keeps flaring
  51. GOCE flares compared (second UPDATE)
  52. Another GOCE flare
  53. Off to a good start: a GOCE and a Lacrosse 2 flare

2009 66

  1. Last observations of the year, and 2009 at a glance
  2. An unidentified HEO object
  3. The STSS demo rocket
  4. More flares by GOCE!
  5. Altering tumbling period of the USA 144/Misty-2 decoy (1999-028C)
  6. Yesterday's GOCE flare modelled
  7. STSS Demo 1 (USA 208) passing the Andromeda nebula
  8. Gravity Probe GOCE (Gravity field and steady state Ocean Circulation Explorer) flaring
  9. Space Shuttle Atlantis STS-129 and the STSS Demo-2
  10. USA 179 and 184
  11. The Lacrosse 5 "disappearance trick", and a BWGS meeting
  12. Past week saw several bright evenings
  13. Who knows more about this patch? (updated)
  14. More HTV-1 and Molniya satellites
  15. More observations from last evening
  16. The HTV-1, on it's way to the ISS (UPDATED)
  17. Molniya orbits and a Keyhole flare again
  18. Space Shuttle Discovery STS-128
  19. A keyhole flare, and an SDS-3 satellite (USA 198)
  20. A Keyhole flaring, a Molniya ELINT and the USA 144 decoy again
  21. The USA 144/Misty-2 launch patch
  22. The tumbling period of the USA 144/Misty-2 Decoy (99-028C)
  23. The Terra (EOS AM-1) satellite, IGS 1B near M31, and more
  24. A keyhole, a Trumpet, IGS 1B, and strays
  25. USA 184 Trumpet (?) ELINT and more
  26. Keyholes, IGS 1B and the USA 144 decoy
  27. Observations, a flare, and a logo
  28. Flaring Keyhole USA 161
  29. USA 186 and IGS 1B
  30. ISS yesterday
  31. Space Shuttle Endeavour STS-127 in deep twilight (footage)
  32. The STSS-ATRR rocket
  33. Keyhole USA 161
  34. ISS and Progress chasing each other
  35. (UPDATED) Where are the observers? A map
  36. Clear nights, and the NOSS 3-4 rocket brightness behaviour
  37. Flare evening
  38. STSS-ATRR rocket again
  39. STSS-ATRR and it's rocket, and Progress-M66 (with photographs)
  40. The Misty 2 decoy, USA 129, IGS 1B and more
  41. Keyhole USA 161 flaring
  42. Iranian Safir 2 r/b still slowly flaring
  43. More HEO object observations
  44. Nice pass of USA 129
  45. March 21 Iridium 33 flashes
  46. Very bright International Space Station (Updated)
  47. More flashing Iridium 33 wreckage, ISS, USA 200 and other high objects
  48. USA 129 flaring
  49. Imaging distant objects: USA 200
  50. More flashes from the Iridium 33 wreckage
  51. Magnificent view of Shuttle and ISS just before docking!
  52. Iridium 33 wreckage photographed, with +4 glint
  53. A close call for the ISS
  54. Iridium 33 and Kosmos 2251 wreckages observed
  55. An Iranian rocket (Safir 2 r/b)
  56. Lacrosse 5 passing alpha Persei
  57. Comet C/2007 N3 Lulin from Leiden
  58. Aftermath of a space collision
  59. Feb 15 Texas-Nebraska daylight fireball was NOT satellite debris
  60. In Memoriam: Iridium 33
  61. Observed the flying toolbag
  62. My third Trojan asteroid
  63. Lacrosse 3 and Uranus
  64. NOSS 3-4 duo through Perseus
  65. The glinting behaviour of USA 32 (88-078A)
  66. Bright SKYMED 2 surprise

2008 63

  1. Clear skies continue!
  2. More on Monday evening
  3. A very clear night, Lacrosses, the Breeze-M tank and the Pleiades
  4. Short observing session
  5. Bad weather
  6. Space Shuttle STS-126
  7. Asteroid (142014) Neirinck
  8. A decaying tank that is not shot down
  9. Goodbye ATV-1
  10. Short observing break (partly due to camera defect)
  11. Rich batch of objects
  12. Andromeda Galaxy
  13. Flares, strays and spy sats
  14. Purple volcanic twilights, and KeyHole satellites
  15. Asteroid 183294 Langbroek!
  16. Lacrosses and a very fine USA 161 flare
  17. More on the USA 193 shootdown
  18. IGS 1B and NOSS 3-2 amidst flying clouds
  19. Keyhole USA 186 manoeuvred at Aug 14.6, and imaging a NOSS duo (REVISED)
  20. IGS 1B flare, no Perseids
  21. Oberg on the USA 193 shootdown
  22. Milky Way photograph, and a tale of lens covers...
  23. Results on the partial solar eclipse (UPDATED TWICE)
  24. USA 186 and ISS
  25. A 3D view of Cospar 4353
  26. Nice evening twilight pass of the ISS
  27. Early Ammonia Servicer (EAS)
  28. Lacrosse 2 and a splendid -7.5 Iridium 5 flare
  29. Lacrosse 2 manoeuvred, and first results with the EF 50/2.5 Macro lens
  30. Iridium flare, and a new camera
  31. Iridium flares
  32. ATV-1 "Jules Verne" and ISS chasing each other in the sky
  33. Two satellite fuel tanks survive re-entry
  34. Bright Keyhole Satellites
  35. ATV-1 "Jules Verne" nice and bright
  36. USA 129, and an unknown object
  37. Interesting visitor
  38. NOTAM warns aircraft of decaying USA 193 debris (updated again 02/03)
  39. Debris of shot spysat USA 193 endangers and delays new spysat launch
  40. Flaring KeyHole USA 129, and two productive evenings
  41. Fragments of destroyed spysat USA 193 still in orbit
  42. Yesterdays longer USA 193 related TV interview now on-line (expanded 11:00 GMT)
  43. They did it!
  44. USA 193 and me in the Dutch TV News
  45. USA 193 lost in clouds, and a visit from a TV crew
  46. Defeated by the weather?
  47. ISS and the Moon
  48. Lacrosse 5 "disappearance trick" over the Pleiades, UARS and ISS again
  49. Twice the ISS, and a bag of other objects
  50. ISS in daylight, and Progress-M62
  51. Space Shuttle Atlantis STS-122, Progress-M62 flaring, and the ISS
  52. Observing ISS and two of its Progress cargo spacecraft
  53. Lacrosse 2 manoeuvred again (updated)
  54. How USA 193 rocked this blog
  55. NOSS 3-4, Lacrosse 5 oddity, and not every DCF-77 clock is the same... (updated)
  56. Peeping through holes in the cloud cover
  57. USA 193: life and death of a spy sat (twice updated 29 Feb)
  58. Thin clouds spoiled the sats, but nice Moon this morning
  59. Of NOSS-es, strays and neighbours
  60. Lacrosse 2 manoeuvre, and bad luck with a stopwatch
  61. NOSS-es, Lacrosses and ISS
  62. More NOSS 3-4
  63. USA 193, first ETX observations of NOSS 3-4, and comet 17P/Holmes

2007 73

  1. Comet 17P/Holmes coma now over 5.5 million km wide: 4 times size of the sun!
  2. Two comets in one picture
  3. USA 193
  4. Lacrosse 5r, ISS, Iridium flares and comet 17P/Holmes
  5. Comet 17P/Holmes, 3 December
  6. Lacrosse 5 flaring, and another Iridium flare
  7. Iridium 97 mag. -2 flare
  8. Comet 17P/Holmes getting larger and larger
  9. Comet 17P/Holmes, 21.9 Nov 2007 (2)
  10. Comet 17P/Holmes, 21.9 Nov 2007
  11. Satellites again: Lacrosse 5
  12. Comet 17P/Holmes over 2 million km large now
  13. "Follow that comet!" (updated)
  14. Continued 17P/Holmes coverage
  15. How about the satellites?
  16. Movement and coma size increase of 17P/Holmes visualized
  17. Yet more comet 17P/Holmes
  18. More comet 17P/Holmes
  19. Comet 17P/Holmes
  20. Short session
  21. Abrixas rocket (99-022C) started to flash - UPDATED
  22. Perseids and satellites from the new outpost "De Wilck" (Cospar 4354)
  23. Observed Space Shuttle Endeavour STS-118 amidst flying clouds
  24. Observing EAS (ISS deb), and checking out a new observing location
  25. Another -8 Iridium flare
  26. NOSS 3-4 Centaur rocket brightness variation
  27. The NOSS 3-4 centaur rocket (07-027B): a nice new object
  28. Another fine night, USA 193 bright & a Lacrosse 3 flare
  29. Observing again
  30. Inoperative period
  31. IGS-es, USA 193, and other stuff during beautiful clear nights
  32. Composite image of a USA 161 pass
  33. USA 161 flare, beautiful evening
  34. Lacrosse 3
  35. First observation of one of the new IGS objects
  36. Flares of USA 186, Lacrosse 3 and an Iridium
  37. Iridium flare season
  38. USA 116 flaring
  39. Another METOP-A flare, hazy skies and timings again
  40. 4 flares in 15 minutes
  41. A timing re-calibration and another flare bonanza
  42. Timing errors and a mag. -5 IGS 1B flare
  43. Bonus flare of unknown (=Metop-A) with USA 129 (UPDATED)
  44. Flare Galore! And IGS 1B tumbling?
  45. Flares of Iridium 14, ISS (!), USA 186 and Lacrosse 4
  46. USA 129: 0.6s early and bright
  47. Chasing Keyholes
  48. Flaring USA 193 and USA 186
  49. My first USA 193 (06-057A) observation
  50. More KH flare fun
  51. Another case of identity confusement
  52. Of brilliant flares, and confusion... (UPDATED & CORRECTED)
  53. A Lacrosse 5 Disappearance and Re-appearance
  54. Lacrosse 2 running early
  55. Flaring Keyhole USA 129
  56. A Keyhole and two Lacrosses
  57. Clear skies at last!
  58. GRRRRR!!!!!
  59. Clouded skies, first signs of Spring
  60. Current situation
  61. More Lacrosse 5, and an old-timer (Kosmos 624) showing up
  62. Successful simultanious observations of Lacrosse 5 "disappearance"!
  63. Table with 05-016A "disappearance events" on-line
  64. Another Iridium flare, Lacrosse 4 and another Lacrosse 5 "disappearance"
  65. Odds of a mag. -7.5 Iridium flare, and twice Lacrosse 5 its tricks
  66. Lacrosse 5 tricks again, and Lacrosse 4 cruising near the Pleiades
  67. Its flaring time again...! (updated)
  68. A Lacrosse 4 flare, and a Lacrosse 5 "disappearance trick"
  69. Storm over Cospar 4353
  70. Again Lacrosse 5, and a comet observation in daylight!
  71. Failed Lacrosse flare
  72. Lacrosse 5 flare, and comet C/2006 P1 McNaught
  73. A good start of the new year!

2006 87

  1. Lacrosse 3 & Lacrosse 5 Rk in hazy skies
  2. SatTrackCam temporarily down
  3. Lacrosse 2 & Lacrosse 5 Rocket in hazy skies
  4. Lacrosse 5 & its "disappearance trick" again
  5. Shuttle STS-116
  6. UARS impostering as ISS, the real ISS, Lacrosses and a rocket stage
  7. Satellites, ISS and an Asteroid
  8. Lacrosses and ISS
  9. A Lacrosse, a Lacrosse rocket and the ISS (updated)
  10. Lacrosse 4 results (update)
  11. Lacrosse 4 lucky shot
  12. Update on previous post
  13. Lacrosse 5 flaring & irregular
  14. Lacrosse 5 doing its tricks amidst hailshowers
  15. SatTrackCam Report no. 1
  16. Lacrosse 5
  17. MT Milcom monitoring, plus report forthcoming
  18. Update on Progress-M58
  19. Progress-M58 observed
  20. Clear skies
  21. Hazy, Lacrosse 4 and Murphy
  22. Warning about the orbit constellation plots
  23. Spysat orbital constellation plot: NOSS
  24. Coincidence, or clever Korean timing?
  25. Some spysat orbital constellation plots (KH-12 Keyhole, Lacrosse and IGS)
  26. Picture fom last weekend
  27. Unexpected clear sky: Lacrosse 3 & Lacrosse 5rk
  28. Quite a lot....
  29. Bad luck
  30. Lacrosse 3 & Lacrosse 5rk cruising up together
  31. Illustrative diagrams
  32. Lacrosse 2
  33. USA 186 Flare Galore
  34. Flare update and Cospar 4353 on Google Earth
  35. USA 186 flare, and is it manoeuvring?
  36. Short observing session
  37. 20% off on all Weapons of Mass Destruction!!!!
  38. Feind hort mit!
  39. Slow Lacrosse 5 flare (belated post)
  40. Difficult Lacrosse 5 flare (?) observation
  41. Lacrosse 5: now you see it, now you don't....
  42. Two classified SAR birds in one image
  43. Lacrosse' 5 odd behaviour
  44. Clear skies continue
  45. Lacrosse 3 and 90-046B as a stray
  46. NLC's and satellites
  47. A nice and predicted Lacrosse 3 flare
  48. Tracking again, and imaging nightfall in time-lapse
  49. Another Time-Lapse movie
  50. Time-lapse of frontal cloud cover arriving
  51. Impressive clouds...
  52. Progress M-57 observed
  53. USA 161 flashing, Lacrosse 4 and a stray
  54. USA 116 keyhole flare
  55. Catched a mag -1.5 Lacrosse 2 flare
  56. Clear skies at last...with a -2 Lacrosse 5 flare
  57. The weather, weather data for Cospar 4353, and the Navy Googling for USA 129
  58. Meeting other satellite observers
  59. Yesterdays Lacrosse 3 data
  60. Lacrosses and IGS 1B, and veil clouds
  61. USA 129 under very bad conditions
  62. IGS 1B, bad luck with the KH's
  63. Lacrosse 3 & Lacrosse 5 rocket, plus IGS 1B
  64. Visit Bram Dorreman
  65. Keyhole Flare Galore!
  66. IGS 1B
  67. Two Keyholes
  68. Nice bright USA 129 pass captured
  69. USA 129 too faint this time
  70. He's back! USA 129 and Solar Eclipse
  71. Lacrosse 4 Flare and missing Lacrosse 5
  72. Clear skies, nice Lacrosse 5 pass
  73. Playing hide & seek with Lacrosse 5
  74. Lacrosse 5 disappearance trick & timing problem gone?
  75. Oh, how I love Japanese electronics... (timing error issues)
  76. A no-show of Lacrosse 5, and timings off again?
  77. Flaring Lacrosse 5
  78. Snow
  79. Defeated by clouds again
  80. Lacrosse 5 and Murphy...
  81. First observations at the new location!
  82. From Cospar 4352 to 4353
  83. Suitsat becomes Mutesat....
  84. New Cospar ID and coordinates
  85. The new home of SatTrackCam...!
  86. Beautiful Stardust re-entry movie!
  87. SatTrackCam is going to move!!!

2005 36

  1. Failed - trail too faint (Lacrosse 4)
  2. Clear sky and fine Lacrosse trail
  3. Foggy skies and Lacrosses
  4. Bad weather
  5. Blue skies and USA 129 again
  6. Update 19
  7. Astrometry fiesta
  8. No observing opportunities
  9. Delta t deviation
  10. USA 129, but no aurora
  11. Accuracy problem with deltaT
  12. Flare of USA 129 Keyhole satellite
  13. Another bright flare of Lacrosse 4 - imaged this time!
  14. Insomnia, Lacrosse 4 and a failed attempt for Lacrosse 5rk
  15. Here is one of two images of iss i
  16. Encouraging accurracy test using ISS
  17. Update
  18. Flare of Lacrosse 4 (00-047A)
  19. A Keyhole and ENVISAT, and NEA's
  20. Another accuracy test
  21. Lacrosse 4
  22. Accuracy test - seem to do fine
  23. Cirrus, and satellites
  24. Further analysis 91-017A (Lacrosse 2) data
  25. Nice bright sat (Lacrosse 2)
  26. Some pictures of the equipment
  27. Another clear night: nice pass of Lacrosse 2
  28. Clear Sky! Observed IGS 1A and IGS 1B
  29. Promises not fullfilled....and learning C++
  30. Still clouded (...), and asteroids
  31. Bad weather over there too, Shuttle postponed
  32. Rainy day, Dream away....
  33. Hunting TNO's...
  34. Clouds again
  35. For visual element heres picture of
  36. Dutch weather sucks! (05-06 Aug 2005 run)