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Jonathan McDowell
@planet4589
Astronomer commenting on space launches. Orbital Police. All plots CC-BY.
4.7K Following    173.7K Followers
Still waiting for further tracking data to confirm this, but this seems an unprecedented step by Russia if correct. I don't think it quite violates the Outer Space Treaty though (but IANAL)
@avrnz New TLEs show that K2612 made a manuever on Oct 16 and is now stationkeeping within 5 km or less of ICEYE X36. To my knowledge this is the first LEO rendezvous of two active satellites where the owner of one of the sats did not give approval.
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@avrnz New TLEs show that K2612 made a manuever on Oct 16 and is now stationkeeping within 5 km or less of ICEYE X36. To my knowledge this is the first LEO rendezvous of two active satellites where the owner of one of the sats did not give approval.
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I talked to Space Daily about one of my favourite lines:
New SNIFFLES research reports 2,345 satellite RF detections across 1–26 GHz, including unintended radiation in protected radio astronomy bands. The findings provide valuable context for my independent S-band observations of Starshield satellites. Links in 🧵⬇️
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LAUNCH at 0001 UTC Oct 16 of a Falcon 9 from Vandenberg with the USSF-481 mission, thought to carry seventeen `moving-target-indicator' spy sats for the US Space Force
Two satellites called Sirius A and Sirius B are manifested on this weekend's Bandwagon-5 launch.. Can anyone tell me anything about these sats? Owner? mission? size?
LAUNCH at 1140 UTC Oct 14 of a Zhuque-2E with eight Guoxing 'Xingshidai' orbital compute sats and two LandTower 'Guangchan' lasercom test sats
LAUNCH at 0028 UTC Oct 13 of Starlink Group 15-25 from Vandenberg LAUNCH at 1033 UTC Oct 13 of cargo mission Dragon CRS-35 on Falcon 9 from Canaveral
Of interest in the recently cataloged Transporter 18 sats: ICEYE-X83 is cataloged as a US satellite, ICEYE-X85 as Netherlands, and ICEYE-86 as a Swedish one (we knew the Swedish defence agency FMV had a contract for ICEYE sats)
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Correction: Crew-12, not Crew-13.
I've been busy, but: LAUNCH at 0323 Oct 7 of South Korea's Nuri 2 with five Neonsat imagers and 9 cubesats LANDING at 1534 UTC Oct 8 of Dragon Crew-13 off the coast of Los Angeles.
I've been busy, but: LAUNCH at 0323 Oct 7 of South Korea's Nuri 2 with five Neonsat imagers and 9 cubesats LANDING at 1534 UTC Oct 8 of Dragon Crew-13 off the coast of Los Angeles.
Starting to kit out my office area. If only I knew where in the 1,170 boxes the box with the monitor cables is..
The 1,170 boxes are now moved in. Several months of unpacking still to do. Also more months of construction (plumbing , etc) and more bills to come. But this is huge.
The library space on Monday, ready to receive the movers:
A major milestone to report for the gofundme - the library is now full of books! Some pics in the next few posts
For those here at #IAC2026#, my panel on lunar sites of special scientific interest (SSSI) is today at 11:30am in D3. What are SSSIs, how can we protect/preserve and really capitalise on the scientific opportunities the Moon offers... #SpacePolicy# #SpaceLaw#
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Margaret Hamilton has died. Absolute legend, it was my honour to meet her and have a conversation with her just a few years ago, super nice and still sharp. Ave atque vale Margaret.
We’ve lost an icon. Margaret Hamilton, a computer science pioneer best known for her work at MIT leading development of the flight software for the Apollo missions to the moon, has died at 90. Read about her legacy via MIT News:
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New space debris event with Soviet satellite launched in 1981 Yesterday @LeoLabs_Space provided public notification of a debris-generating event from the defunct Soviet Meteor-2-7 satellite launched in 1981 (US catalog 12456 / 1981-043A). As of this writing, there has not been a notification of the event from @S4S_SDA via @SpaceTrackOrg . LeoLabs has reported "tens of fragments" (ref their x post in comments). This is actually the second such event from this satellite, with the first occurring in March of 2004. The Meteor-2 satellites were the 2nd generation of Soviet weather satellites. @planet4589 provides a mass estimate of ~ 1500 kg. Using pre- and post-orbital position information (element sets), the time of the debris event is approximately 2026-10-05 09:45 +/- 10 min UTC. Meteor 2-7's altitude of 855 km is in a dense region for orbital debris. Might we have experienced an impact from one of the numerous untracked debris objects? It is furthermore observed that the event time estimate places the 81 degree inclined satellite near its highest latitude position (ref graphic below), where the debris spatial density is highest. We will likely never know.... #SpaceDomainAwareness# #SpaceTrafficManagement# #LongTermSustainmentOfSpace# (Orbital data courtesy of U.S. Space Forces – Space (S4S) via and used with permission per ODR 24-002-4)
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All of the Group 31-1 (Starship-launched) Starlinks have now begun raising orbits; most are pausing at 295 km for differential orbital plane drift adjustment and will presumably resume ascent after some weeks
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LAUNCH at 1832 UTC Oct 1 of the Transporter-18 rideshare mission from Vandenberg