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.

Monday, 23 April 2018

Pinpointing the OTV 5 orbital manoeuvre on 19 April 2018

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click map to enlarge As related in a previous post , the X-37B robottic space plane OTV 5 made an orbital manoeuvre on the 19th, lower...
Sunday, 22 April 2018

OTV 5 or Zuma? A brief explanation why this object is OTV 5 and not Zuma

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click image to enlarge The image above shows the US Air Force's "secret" X-37B space plane OTV 5 ascending in the wester...
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Saturday, 21 April 2018

Imaging the X-37B Space Plane OTV 5 post-manoeuvre

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click image to enlarge The image above shows the secretive X-37B Space Plane OTV 5 , a robottic mini space shuttle flown by the US Air ...
Sunday, 15 April 2018

X-37B OTV-5 mission located on orbit

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OTV-5 , The fifth mission of the US Air Force' X-37B   robottic mini-shuttle, was launched from Cape Canaveral on 7 September 2017 o...
Monday, 2 April 2018

Updated Tiangong-1 reentry forecasts (updated April 2)

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[post last updated April 2, 3:00 UT, 3:45 UT, 16:50 UT and 21:30 UT] Final orbit and reentry position of Tiangong-1 (click map to enla...
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Sunday, 25 March 2018

The atmospheric reentry of the Soyuz upper stage 2018-026B on March 25

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click map to enlarge On March 21 at 17:44 GMT,  a Soyuz rocket ( Soyuz MS-08 ) was launched from Baikonur in Kazakhstan, bringing thre...
Friday, 23 March 2018

The reentry of Humanity Star (updated)

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(This post was updated April 4, 2018, with the results of lifetime-modelling. The update is at the end of the post) The Humanity Star....
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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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