For one thing the one air-space closure zone seems to indicate a 63 deg. LEO/NOSS-type/Molniya orbit, also that YW-6 tracking ship is btw Java & W Australia right now, but the locations doesn’t quite match w/ the YG-31 series launches this year.
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It “should” be a LM-4C given tracking ship involvement, but the location is weird (positioning suggesting ~70 deg. orbit) that 2C/2D/4B can’t be ruled out. No known S/C can be paired to this. So uhh w/ the zones for CSS Tianhe launch still 404 it’ll remain a mystery for now.
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Cosmic Penguin hat VAXXEDLaunch retweetet
...and yup the Chinese are going back into stealth mode immediately tomorrow:https://twitter.com/Nextlaunch/status/1387631224815034371?s=19 …
Cosmic Penguin hat hinzugefügt,
VAXXEDLaunch @Nextlaunch
:38th UP!
:Friday
:0719-0743 UTC / 3:19-3:43 EDT / 16:19-16:43 JST
:Long March 
:




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:LEO
:

:https://forum.nasaspaceflight.com/index.php?topic=53688.0 …
:http://free.timeanddate.com/countdown/i66vszuf/cf12/cm0/cu4/ct0/cs0/ca1/co0/cr0/ss1/cac090/cpc000/pc000/tcfff/fn1/fs400/szw576/szh300/iso2021-04-30T07:19:00/bo2/pd2 …1 Antwort 2 Retweets 12 Gefällt mirDiesen Thread anzeigen -
No news yet, let's see what happens...
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And...launch success confirmed. It was indeed a Long March 4C launching at 07:27 UTC w/ a certain "Yaogan 34", described as an optical remote-sensing satellite built by SAST. http://t.cn/A6cnB5ha
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This launch puts the obscure (due to its payload usually classified or plain civil domestic EO sats) Long March 4 series at 6 out of 6 in 2021 so far, just 1 short of Soyuz and firmly in 3rd place for usage frequency. Official reports has it flying "around 14 times" this year.pic.twitter.com/bBuuXGrlzo
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This is also the first LM-4 series launch from Jiuquan using the larger 4 m diameter payload fairing. Previously such launches were all from Taiyuan.pic.twitter.com/KJ80aqzJ1t
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Regarding the destination of the satellite, there were speculations of it making a dogleg to SSO, however there's an observation of what looks like rocket stage venting in New South Wales Australia ~30 min later which fits w/ this one & in ~60 deg. LEO. http://satobs.org/seesat/Apr-2021/0169.html …
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Tracking data from
@18SPCS: 2021-037A/48340: 1083 x 1105 km x 63.38° (S/C) 2021-037B/48341: 983 x 1091 km x 63.45° (rocket) Interesting orbit for an optical EO sat, and even more interestingly YG-34's co-orbital w/ the YG-31-01 triplet "Chinese NOSS" satellites! I wonder...
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Antwort an @Cosmic_Penguin @18SPCS
If it is an imaging sat and it passes slightly after the triplet it could be used for precise identification. But it could also be SIGINT.
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Yeah I was thinking about the same thing, cross-identification of targets at the same time. BTW YG-34 is co-orbital with YG-31-02 triplets launched this January, not Group 01 launched in 2018.
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Antwort an @Cosmic_Penguin @18SPCS
I checked and it is behind the triplet, however it could maneuver so we will have to wait a little bit to confirm.
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If it's indeed an imaging sat working with those triplets, there should thus be two other Yaogan-34 to launch soon?
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