@s2a-systems.bsky.social
Developing and operating systems for Space Situational Awareness.
The one object catalogued so far from the ZhuQue-3 launch 2025-282, recorded on 2025-12-05 01:52:24 UTC.
05.12.2025 10:29 — 👍 2 🔁 1 💬 0 📌 1
Bad weather delayed the obs, but here they are: SJ-25 and SJ-21A on 2025-11-29, 13:37:43 UTC
29.11.2025 14:20 — 👍 2 🔁 1 💬 0 📌 0I don't have the mission details at hand. But maybe @planet4589.bsky.social has a better insight here.
29.11.2025 13:49 — 👍 2 🔁 0 💬 1 📌 0A short animation of tonight's pass of Transporter-15 from 2025-11-29 03:25:32 UTC (horizon) to 2025-11-29 03:27:05 UTC (entry into Earth's shadow), seen from South America.
29.11.2025 11:02 — 👍 10 🔁 5 💬 1 📌 0
A quick snapshot of Transporter-15 with some activity. Recorded on 2025-11-29 03:26:22 UTC at 7.4 deg elevation over South America.
29.11.2025 04:06 — 👍 6 🔁 2 💬 0 📌 0
We took this week another look at the object we suspect to be 65589. The object still appears to be rotating, and the photometry shows a pattern comparable to the measurement taken on September 14, 2025.
20.11.2025 17:31 — 👍 2 🔁 1 💬 0 📌 0
And something slightly OT. C/2025 K1 (ATLAS) during a tracking pause last night. 50 frames stacked and a single frame, from a bit earlier in the evening, to visualize the three fragments a little more clearly.
19.11.2025 15:07 — 👍 16 🔁 6 💬 0 📌 0
A snapshot of VIASAT-3 F2 and the ATLAS 5 CENTAUR R/B from earlier this week.
19.11.2025 13:57 — 👍 2 🔁 1 💬 0 📌 0
Finally, observation conditions are improving. New Glenn GS2 (2025-260C) from this morning, 2025-11-17 08:08:18 UTC, with a rotation period of approximately 309 seconds.
17.11.2025 12:40 — 👍 3 🔁 2 💬 0 📌 02025-10-28: Satellite routine paused. Comet mode activated. C/2025 A6 (Lemmon), 17:15:29 – 18:03:33 UTC, recorded from Switzerland.
02.11.2025 13:48 — 👍 4 🔁 1 💬 0 📌 0
HTV-X1, today 2025-10-27 23:57:21 UTC over South America.
28.10.2025 00:29 — 👍 3 🔁 1 💬 0 📌 0
A short light curve of the object catalogued as 2025-239A. Recorded yesterday, 2025-10-24 between 17:56:54 and 18:09:59 UTC. Looks like the upper stage and not the payload.
25.10.2025 21:52 — 👍 2 🔁 1 💬 0 📌 0
The 28 satellites of STARLINK Group 11-5, today 2025-10-23 00:09:06 UTC over South America.
23.10.2025 19:39 — 👍 3 🔁 1 💬 0 📌 0
The 18 satellites of the Qianfan Jigui (G60) Group 18, today 2025-10-21 08:01:38 UTC over South America.
21.10.2025 14:43 — 👍 3 🔁 2 💬 0 📌 0
The five satellites of the Hulianwang Digui Group 11, recorded today, 2025-09-28 10:11:33 UTC
28.09.2025 13:34 — 👍 2 🔁 1 💬 0 📌 0
GEESAT Group 06, recorded today 2025-09-25, 18:41:31 from Australia.
25.09.2025 23:20 — 👍 1 🔁 1 💬 0 📌 0
The four WHJSW test satellites... and heavy space traffic. Recorded today, 2025-09-17 at 09:54:43 UTC from Australia.
17.09.2025 18:22 — 👍 1 🔁 1 💬 0 📌 0
COSMOS 2596 [GLONASS-K1], recorded today, 2025-09-14 12:41:00 UTC, accompanied by a fainter, tumbling object in train.
14.09.2025 14:13 — 👍 1 🔁 1 💬 0 📌 0
Two different objects for Space-Track’s #65486. The tumbling CZ-3C stage 3 (epoch 25248.71179175) and most likely the payload (epoch 25248.96195228 after the swap of the orbital data).
06.09.2025 23:24 — 👍 1 🔁 1 💬 0 📌 0
A lot of movement at COSMOS 2589 and OBJECT C over the last few days while they are continuing their RPO.
03.09.2025 21:31 — 👍 1 🔁 1 💬 0 📌 0
The light curve of GLOBALSTAR M066 #32265 shows a clear repeating pattern. This could explain the weird orbital parameters since June. Link to the orbital data on celestrak.org: celestrak.org/NORAD/elemen...
28.08.2025 12:49 — 👍 1 🔁 1 💬 0 📌 0
CZ-8A upper stage (2025-187K/65314) over South America, recorded this morning 2025-08-27 10:07:44 UTC. Image 90° CCW.
27.08.2025 22:00 — 👍 1 🔁 1 💬 0 📌 0
The 9 satellites of the SatNet LEO Group 10 and the CZ-8A upper stage.
26.08.2025 14:52 — 👍 2 🔁 1 💬 0 📌 0
7 objects recorded from the 2025-185 Electron launch.
24.08.2025 23:38 — 👍 3 🔁 1 💬 0 📌 0
And today’s SJ-25/SJ-21.
…
OTV-8 this morning, 2025-08-23 10:02:21 UTC during a low-elevation pass at 5 deg elevation.
23.08.2025 18:19 — 👍 3 🔁 2 💬 0 📌 0A short time-lapse of today's CZ-6A (2025-178F/65233) pass. Recorded on 2025-08-18 from 21:14:13 to 21:21:35 UTC.
18.08.2025 22:15 — 👍 2 🔁 1 💬 0 📌 0
The 5 satellites of the SatNet LEO Group 09 and the CZ-6A upper stage. Recorded today, 2025-08-17, from Switzerland at 19:35:04 and 21:10:38 UTC.
17.08.2025 22:12 — 👍 1 🔁 1 💬 0 📌 0
The 10 satellites of yesterday’s SatNet LEO Group 08 launch. Recorded on 2025-08-14 at 00:05:33 UTC.
14.08.2025 17:58 — 👍 1 🔁 1 💬 0 📌 0
The 11 satellites of the Geely Constellation Group 04, recorded on 2025-08-09 10:44:27 UTC.
09.08.2025 11:30 — 👍 1 🔁 1 💬 0 📌 0
