Rumour has it that thisd might be another inspector satellite.
The orbital plane of USA 326 passes over Plesetsk at 20:25 UT
USA 326 (2022-009A) was launched on February 2 this year and is believed to be a new generation of electro-optical reconnaissance satellite:
sattrackcam.blogspot.com/2022/02/the-up…
It is in a 97.4 deg inclined, 518 x 488 km orbit.
The Russian launch today was indeed at 20:25 UTC, right at the moment the USA 326 orbital plane passed over Plesetsk (i.e. the launch was into the orbital plane of USA 326):
interfax.ru/russia/854824
It appears that the object has been catalogued under number 53324 in a 97.25 degree inclined 284 x 425 km orbit, in the same orbital plane as USA 326 but a somewhat lower initial orbital altitude.
Will be interesting to see what it will do the coming weeks & what USA 326 will do
The orbit is still preliminary but compared to USA 326, RAAN differs by only 0.08 deg, inclination by 0.14 deg, apogee by ~92 km, perigee by ~205 km, Mean Motion by about 0.5 revolution/day.
If the suspicions hold, I expect it to manoeuvre to raise perigee and apogee
It turns out that the first object catalogued, 53324, is actually the rocket booster.
Payload now also catalogued as object 53323 in a 97.25 degree inclined, 435 x 452 km orbit even closer to the USA 326 orbit (differences: RAAN 0.04 deg, perigee 53 km, apogee 65 km)

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More from @Marco_Langbroek

Feb 26
1/x
Navigational Warnings have appeared that suggest a #test launch of a #Minuteman #ICBM from Vandenberg on March 3 - 4.

(I suspect 1 or 2 more NavWarnings to appear for areas around Kwajalein, based on previous tests)
@nukestrat @mhanham @wslafoy @ArmsControlWonk ImageImage
2/x
To be clear (as such suggestions always arrise):
This has *nothing* to do with the Ukraine crisis. Tests like these are scheduled months in advance.
They are regular tests to ascertain the readiness and training of missile crews.
3/x
As I expected, another Navigational Warning has appeared, adding an extra hazard area west of Kwajalein.
Updated map for this upcoming #Minuteman III test (probably GT240GM): ImageImage
Read 8 tweets
Oct 17, 2021
1/x
(lange) draad:
Het gaat véél verder dan een "hypersonische raket": de Fin. Times claimt dat de Chinese test een test voor FOBS betrof...

FOBS staat voor "Fractional Orbital Bormbardment System". FOBS lanceer je niet op een ballistisch traject zoals een normale ICBM, (cont.)
2/x
...maar worden echt in een baan om de aarde gebracht, zoals een satelliet. Waarna op een gegeven moment met een deorbit burn door een retroraket, de lading weer omlaag wordt gebracht, boven het doelwit.
Welnu: waarom zou je dit zo doen in plaats van een normale ICBM lanceren?
3/x
Het voordeel van FOBS is dat het je toestaat toe te slaan vanuit richtingen die met gewone ICBM's niet worden verwacht. Via een traject over de zuidpool bijvoorbeeld. Dan benader je de VS (het doelwit) vanuit het zuiden (gele lijn), terwijl
Read 26 tweets
Oct 16, 2021
1/x
It is with great pleasure that I can announce that the Working Group on Small Body Nomenclature of @IAU_org has decided that asteroid (563318) will henceforth be named:

(563318) ten Kate

After the Dutch @UniUtrecht astrobiologist/planetary scientist Dr @ingeloes ten Kate
2/x
The naming citation for (563318) ten Kate was published yesterday in IAU-WGSBN Bulletin vol 1. nr 10, p 7:
wgsbn-iau.org/files/Bulletin…
3/x
Dr Inge Loes ten Kate is a well know researcher into the processes that brought carbon to Mars, through Carbonaceous meteorites and their degradation in the Martian environment, with a focus on the potential creation of Martian environments suitable for (simple) life.
Read 6 tweets
Aug 6, 2021
1/x
A curious Navigational Warning has appeared for what appears to be a series of Space Debris deorbits.
The areas point to deorbit from a ~51-53 degree inclined set of orbits.
#Starlink mass #deorbit?
Some areas line up with ISS passes in the two time windows given, but (cont.)
2/x
(cont.) but AFAIK nothing will leave the ISS between now and August 10. And the areas south of Alaska do not line up with ISS groumndtracks in the given two time windows.
So my guess is multiple #Starlink deorbits (but I might be wrong).
3/x
Story consolidated in a new blogpost:
sattrackcam.blogspot.com/2021/08/a-weir…
Read 6 tweets
Aug 4, 2021
The #Proton-M third stage from the #Nauka launch is now coming down faster and faster.
Current prediction models place reentry within 2 days from now, either late August 5 or early August 6, with the trend in predictions tending towards August 5.
@SSC_NL ImageImage
These reentry forecasts are also on my blog:
sattrackcam.blogspot.com/2021/08/proton…
The #Proton-M third stage from the #Nauka launch now has less than one day left in orbit. Current model forecasts suggest a reentry in the morning of August 6 UT. ImageImage
Read 10 tweets
Jun 27, 2021
1/x
Navigational Warnings have appeared for the @VirginOrbit "Tubular Bells part I" launch on June 30 (a LauncherOne rocket launched from the 'Cosmic Girl' aircraft).
This launch includes #BRIK-II, the first Dutch military satellite, launched for the Royal Netherlands Air Force. ImageImageImageImage
2/x
"BRIK-II" is a 6U cubesat (about 60 x 30 x 20 cm, 10 kg).
It is named after the very first aircraft, named 'Brik', of the RNLAF predecessor in 1913-1916. It is also the name for a brick, hence the mission patch
(photo of original Brik aircraft: NL Inst. for Military History) ImageImage
3/x
The small experimental BRIK-II satellite includes equipment for communication, for monitoring "Space Weather", and for ELINT.
It was built by @isis_space ImageImage
Read 5 tweets

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