SatTrackCam Leiden (b)log

THE SECRET SPIES IN THE SKY - Imagery, Data Analysis, and Discussions relating to Military Space

SatTrackCam Leiden (Cospar 4353) is a satellite tracking station located at Leiden, the Netherlands. The tracking focus is on classified objects - i.e. "spy satellites". With a camera, accurate positional measurements on satellites of interest are obtained in order to determine their orbits. Orbital behaviour is analysed. This blog analyses Missile tests too.

Friday, 3 December 2021

Some first analytical results on the debris from the Russian ASAT test of 15 November 2021

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  click image to enlarge   In my previous post I discussed the November 15 Anti-Satellite (ASAT) test on the defunct Kosmos 1408 satellite...
3 comments:
Tuesday, 16 November 2021

The Russian Federation conducted a destructive ASAT test on Kosmos 1408 on November 15 [updated]

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click map to enlarge   In the early morning of November 15, astronauts and kosmonauts onboard the ISS were instructed to put on their spaces...
1 comment:
Thursday, 11 November 2021

PAN/NEMESIS 1 is still drifting

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  click image to enlarge In a blog post in September , I wrote that after almost eight years of being steady at longitude 47.7 E, the classi...
Monday, 18 October 2021

The Chinese space plane test of 16 July 2021: orbital, not suborbital?

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click map to enlarge   In my previous post I debated at length a claim by the Financial Times on October 16 that China recently did a FOBS ...
1 comment:
Sunday, 17 October 2021

A Chinese FOBS surprise (and other stuff of nightmares) [UPDATED]

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  [ this post was updated on October 18 to reflect new information and a refutal of the claim by the Chinese Government. It was again update...
2 comments:
Tuesday, 28 September 2021

Spectacular deorbit burn / fuel dump from the Landsat 9 Centaur upper stage observed

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click to enlarge   Yesterday 27 September 2021 at 18:12 UT, Landsat 9 was launched from Vandenberg with a ULA Atlas V rocket.  2h 58m afte...
1 comment:
Friday, 17 September 2021

Inspiration4 Crew Dragon over the old Leiden Observatory

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click to enlarge   The image above, which I shot yesterday evening (16 September 2021) around 19:24 UT, shows the SpaceX Crew Dragon Inspira...

An upcoming Trident-II D5 SLBM test in the Atlantic

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click map to enlarge A few days ago a Navigational Warning ( NAVAREA IV 838/21 , also issued as HYDROLANT 2336/21 ) appeared which points t...
Tuesday, 14 September 2021

PAN (NEMESIS 1) is on the move again

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Pan on August 8/9, 2021, imaged from Leiden. Click image to enlarge Five years ago, in 2016, I wrote a long article in The Space Review tit...
Sunday, 12 September 2021

An Asteroid for Alice

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    As long-time readers of this blog know, I have been active in searching for Near Earth Asteroids (discovering two: 2005 GG 81 and 2015...
Friday, 27 August 2021

First positive observations of the LED beacon of the NAPA-2 6U cubesat

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  On June 30, 2021, a Falcon 9 launched several cubesats in a rideshare launch called Transporter-2 . One of the payloads was a 6U cubesat c...
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About the Author

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SatTrackCam Leiden
Dutch, 55, Lecturer in optical Space Situational Awareness at Delft University of Technology, Faculty of Aerospace Engineering, the Netherlands. Former stone age archaeologist (PhD). Also a meteoriticist and asteroid discoverer.
Asteroid (183294) Langbroek was named after me. In 2012, I received the Dr. J. van der Bilt Prize of the Royal Dutch Astronomy Association (KNVWS) for my work on meteors, asteroids and satellites.Opinions expressed on this blog are entirely my own, not those of my employer.
You can find me on Twitter via @Marco_Langbroek and at BlueSky as @marcolangbroek.bsky.social

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