s2a systems

s2a systems

@s2a-systems.bsky.social

Developing and operating systems for Space Situational Awareness.

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Optical observation conditions for this object are currently poor at our sites due to orbit/Earth's shadow. Nevertheless, a pass over Australia, recorded on 2026-10-08, still showed some debris around METEOR 2-7 #12456.

Some recordings of USA 32 (#19460), whose fragmentation in LEO on 13 Sep 2026 at approximately 2113 UTC was confirmed by U.S. Space Forces–Space (S4S). By the time of the recordings, a large number of fragments had already dispersed over a wide section of the track.

A short animation of images recorded over 36 min of @isro’s EOS-05 (GISAT-1A) and the GSLV upper stage, from Switzerland on 2026-09-04, 19:11:36–19:47:36 UTC.

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We would also like to express our sincere thanks to Tim Flohrer, Oleksandr Kozhukhov, and the entire Cluster re-entry team at ESA for giving us the opportunity to apply our optical SSA network to the Cluster re-entry campaign and gain valuable experience in this specific operational context.

Over 35 nights, we conducted more than 200 observation series from 3 stations and recorded over 35000 astrometric positions, contributing to ESA’s orbit determination efforts for the targeted re-entries.

A short time-lapse of PRC TEST SPACECRAFT 4 (67689/2026-024A) and the newly deployed object (69673/2026-024H), captured on 2026-06-23 during their pass over Switzerland.

This morning’s Artemis II: Integrity on its way back home Crossing the field of view slowly from left to right. Time-lapse covering the period from 07:30:00 to 07:59:58 UTC on 2026-04-10. Further observations from our sites will no longer be possible due to the orbit.

This morning’s Artemis II: Integrity on its way back home, at the edge of the Milky Way. Crossing the field of view from bottom left to top right. Time-lapse covering the period from 06:25:39 to 07:25:36 UTC on 2026-04-09. Second-to-last day of the mission.

Today’s Artemis II: Integrity on its way back home. Crossing the field of view from the bottom center to the top. Time-lapse covering the period from 07:00:00 to 08:00:31 UTC on 2026-04-07.

Today’s Artemis II: Integrity on its way to the Moon. Crossing the field of view from the bottom left to the top right. Time-lapse covering the period from 04:00:04 to 05:59:56 UTC on 2026-04-06.

A cropped and zoomed-in animation of yesterday's ICPS after the CubeSats were deployed. Time-lapse covering the period from 04:26:31 to 05:35:42 UTC on 2026-04-02.

SatNet LEO Group 20 and the Long March 8A (CZ-8A) upper stage from this morning over South America. The objects surrounding the upper stage are most likely remnants of the passivation process.