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, 30 November 2007

Comet 17P/Holmes getting larger and larger

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Yesterday evening saw a period with clearings, which allowed me to photograph comet 17P/Holmes again. It is still visible by the naked eye, ...
Thursday, 22 November 2007

Comet 17P/Holmes, 21.9 Nov 2007 (2)

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In my previous post , I posted a 29 image stack of comet 17P/Holmes. I took 46 images that night but the software couldn't handle more t...

Comet 17P/Holmes, 21.9 Nov 2007

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Yesterday evening it unexpectedly cleared. A bright waxing gibbous moon was in the sky, but nevertheless I managed to obtain a fine image of...
Monday, 19 November 2007

Satellites again: Lacrosse 5

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Last evening finally allowed me to image a satellite pass again. Conditions were not perfect (hazy skies, later that evening it became compl...
Sunday, 18 November 2007

Comet 17P/Holmes over 2 million km large now

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Another clear evening yesterday, so another photo-shoot on comet 17P/Holmes . It is still an easy naked-eye object even from the center of L...
Friday, 16 November 2007

"Follow that comet!" (updated)

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Yesterday (Nov 15-16) around local midnight it cleared again, and with comet 17P/Holmes in the zenith this meant some nice photographic resu...
Monday, 12 November 2007

Continued 17P/Holmes coverage

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Short but bright clearings between hailshowers late last evening allowed me to image comet 17P/Holmes again. It still is a naked eye object,...
Saturday, 10 November 2007

How about the satellites?

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SatTrackCam hasn't produced much satellite data during the past two months. The reasons for this include these: 1. A necessary focus o...
Friday, 9 November 2007

Movement and coma size increase of 17P/Holmes visualized

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Below image is a combination of photographs I took on two different nights just over a week apart. It clearly demonstrates not only the move...
Thursday, 8 November 2007

Yet more comet 17P/Holmes

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Late last evening (around local midnight)it cleared again, and unlike two days earlier this time the sky quality was good. 17P/Holmes was an...
Tuesday, 6 November 2007

More comet 17P/Holmes

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After a week of very bad weather, it cleared last evening. The skies were far from perfect (haze, and flying clouds), but I could snap a few...
Tuesday, 30 October 2007

Comet 17P/Holmes

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After a long period of cloudy skies, it finally cleared last evening. Not in time to catch satellites, but in time to catch comet 17P/Holmes...
Monday, 20 August 2007

Short session

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Rainshowers dominate the weather since a few days. I did get a short period of clearings last night however, with very transparent sky. It e...
Tuesday, 14 August 2007

Abrixas rocket (99-022C) started to flash - UPDATED

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On August 1st Bram Dorreman discovered that the SL-8 booster of the Abrixas launch ( 99-022C, #25723 ) that was previously stable, had star...
Sunday, 12 August 2007

Perseids and satellites from the new outpost "De Wilck" (Cospar 4354)

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Last night was the inaugural night of my new secondary 'outpost' in the polder at De Wilck (see previous post here ), now Cospar 435...
Friday, 10 August 2007

Observed Space Shuttle Endeavour STS-118 amidst flying clouds

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Miracles do happen after all. This evening (9-10 August) was the only evening with an opportunity to spot the Space Shuttle Endeavour STS-11...
Monday, 6 August 2007

Observing EAS (ISS deb), and checking out a new observing location

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Yesterday evening around 21:02 UTC I observed EAS (the Early Ammonia Servicer, 98-067BA, #31928 ), the refridgerator-sized tank thrown away ...
Sunday, 5 August 2007

Another -8 Iridium flare

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Bright Iridium flares never are a bore, and the summer season with its long twilight at my latitude has plenty of them. Last night at 22:56:...
Saturday, 4 August 2007

NOSS 3-4 Centaur rocket brightness variation

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Last night (3-4 August) I observed the NOSS 3-4 Centaur rocket stage (07-027B) again over a large part of its trajectory. I obtained a numbe...
2 comments:
Wednesday, 1 August 2007

The NOSS 3-4 centaur rocket (07-027B): a nice new object

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June 15 2007 saw the launch of NRO's NOSS 3-4 satellites. They belong to the new US Navy twin satellite constellation (the old NOSS-es ...
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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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