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Jonathan McDowell

@planet4589.bsky.social

Astrophysicist

19,311 Followers  |  1,988 Following  |  3,222 Posts  |  Joined: 12.05.2023  |  2.1038

Latest posts by planet4589.bsky.social on Bluesky

On Nov 18 at 1005 UTC NASA launched a Terrier /Improved Malemute rocket on suborbital flight NASA 46.040WO from Andoya to 268 km apogee with the GHOST student atmospheric research payload.

19.11.2025 06:16 โ€” ๐Ÿ‘ 24    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Jonathan's Space Report No. 851 published at planet4589.org/jsr.html

19.11.2025 06:12 โ€” ๐Ÿ‘ 27    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

LAUNCH at 0012 UTC Nov 19 of Starlink Group 6-94 from Canaveral [corrected time from earlier post]

19.11.2025 05:20 โ€” ๐Ÿ‘ 18    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

LAUNCH at 0401 UTC Nov 19 of a CZ-2C from Jiuquan with the ๅฎž่ทตไธ‰ๅๅทAใ€Bใ€Cๆ˜Ÿ (Shi Jian 30A, 30B and 30C) satellites

19.11.2025 04:46 โ€” ๐Ÿ‘ 21    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Yes. The sat is being tracked in GEO at its target 93.5E location

18.11.2025 13:41 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Shenzhou 2 to 6 carried a thruster on the module for experiments. Shenzhou 7 and later didn't have this thruster.

18.11.2025 13:40 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

The discarded Shenzhou 21 orbital module has been cataloged as object 66515 in a 382 x 388 km orbit

18.11.2025 05:56 โ€” ๐Ÿ‘ 38    ๐Ÿ” 5    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Congratulations, Dr. Turner!

17.11.2025 21:35 โ€” ๐Ÿ‘ 8    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Sentinel-6B cataloged in a 1308 x 1327 km x 66.1 deg orbit, confirming successful launch

17.11.2025 19:48 โ€” ๐Ÿ‘ 42    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Sentinel-6B has separated from the Falcon 9 and is in a 66 deg inclination orbit.

17.11.2025 06:21 โ€” ๐Ÿ‘ 46    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

LAUNCH at 0521 UTC Nov 17 of Falcon 9 from Vandenberg with the Sentinel-6B ocean sea level altimetry satellite, a joint EU/NASA project

17.11.2025 05:24 โ€” ๐Ÿ‘ 39    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Correct, the delivery truck.

17.11.2025 04:42 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Viasat-3F2 and Centaur AV-100 cataloged in 12316 x 23667 km x 6.6 deg and 12252 x 23673 km x 6.0 deg orbits, confirming successful launch.

17.11.2025 02:26 โ€” ๐Ÿ‘ 34    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

It has no mission ahead. It's a good thing for astronomers so we don't confuse it in future with an asteroid

15.11.2025 23:13 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Post image

Boston area folks:
Brickbottom Open Art Studios next weekend, Nov 22-23 afternoons, including my exhibit of images from the Smithsonian's telescopes.

15.11.2025 21:08 โ€” ๐Ÿ‘ 19    ๐Ÿ” 5    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

The NewGlenn GS2 stage has been tracked by astronomers in a 315 km perigee hyperbola with C3=0.23 which (preliminary estimate) will send it to a 0.98 x 1.08 AU x 0.1 deg heliocentric orbit (Further observations will refine this assessment)

15.11.2025 19:29 โ€” ๐Ÿ‘ 51    ๐Ÿ” 6    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

LAUNCH at 0644 UTC Nov 15 of Starlink Group 6-85 from Canaveral

15.11.2025 06:52 โ€” ๐Ÿ‘ 24    ๐Ÿ” 2    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

I'm potentially interested in this one!

15.11.2025 03:22 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

LAUNCH at 0308 UTC Nov 15 of Starlink Group 6-89 from Kennedy Space Center

15.11.2025 03:18 โ€” ๐Ÿ‘ 20    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Shenzhou-21 landed in China at 0840 UTC

14.11.2025 13:08 โ€” ๐Ÿ‘ 36    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

The former Shenzhou-20 crew undocked from the Chinese Space Station at 0314 UTC Nov 14 in Shenzhou 21. This leaves the former SZ-21 crew on CSS with SZ-20, which has a cracked window pane

14.11.2025 05:29 โ€” ๐Ÿ‘ 73    ๐Ÿ” 9    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 3

LAUNCH at 0304 UTC Nov 14 of Atlas AV-100 from Canaveral with the Viasat-3F2 communications sat

14.11.2025 03:14 โ€” ๐Ÿ‘ 41    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

The two ESCAPADE spacecraft have separated from the New Glenn following a successful launch. GS2 stage making a "CCAM" avoidance burn.

13.11.2025 21:31 โ€” ๐Ÿ‘ 93    ๐Ÿ” 10    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

New Glenn 2 stage GS2 now in parking orbit. Does anyone know if the 'miles' on the webcast altitude are statute or nautical? Assuming statute, orbit around 160 x 400 km? AFAIK Blue has not reported perigee/apogee

13.11.2025 21:18 โ€” ๐Ÿ‘ 51    ๐Ÿ” 6    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 1

LAUNCH at 2055 UTC of New Glenn no. 2 from Canaveral. Successful landing of GS1 stage on the Jacklyn barge. GS2 ascent burn still underway

13.11.2025 21:07 โ€” ๐Ÿ‘ 77    ๐Ÿ” 10    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 0

I think Ricky Gervais and MJR would actually work well

13.11.2025 16:03 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

2025 is not over yet! Still unclear if I will remain intact by new year... especially if I have to review further papers by a certain colleague...

13.11.2025 05:20 โ€” ๐Ÿ‘ 18    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

After some delay, we now have Space Force orbital data for:
Chutian 2-01/2-02, in 713 x 731 km x 98.3 deg sunsync orbit
WHDW 13 (SatNet LEO 13-1 to 13-9) in 795 x 812 km x 50 deg orbit
Shiyan-32 01 to 03 in 430 x 450 km x 53.0 deg orbit
Yaogan 46 is in a 7361 x 7497 km x 20.0 deg orbit

13.11.2025 04:31 โ€” ๐Ÿ‘ 27    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
Center of the Milky Way from Chandra, Hubble, & Spitzer Straight-cut T-Shirt NASA's Great Observatories (Hubble, Chandra, and Spitzer space telescopes) are nothing short of iconic, and their view of the central region of the Milky Way Galaxy is a favorite image of many space e...

Not only that, for the interview I was wearing a space shirt from the satellite I work on! shop.startorialist.com/collections/...

12.11.2025 22:55 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1

LAUNCH at 0405 UTC Nov 12 of a Red Kite/Red Kite booster from ESRANGE with the MAPHEUS 16 microgravity payload on a suborbital flight to 267 km apogee.

12.11.2025 22:53 โ€” ๐Ÿ‘ 24    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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