this post was submitted on 28 Mar 2026
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Jack Congram article: https://www.china-in-space.com/p/mysterious-shiyan-research-satellite

NextSpaceflight page: https://nextspaceflight.com/launches/details/8199/

Video shared by Andrew Jones: https://bsky.app/profile/andrewjonesspace.bsky.social/post/3mhznzjo2us2x

Launch and orbit info from Jonathan McDowell:

https://bsky.app/profile/planet4589.bsky.social/post/3mhzeyirrhc2o

LAUNCH at 0411 UTC Mar 27 of a CZ-2C/YZ-1S from Jiuquan with the Shiyan 33 test satellite ( 试验三十三号卫星 ). Orbit not yet known.

https://bsky.app/profile/planet4589.bsky.social/post/3mi2kafxks227

Shiyan-33 tracked in a 485 x 505 km x 97.5 deg, 1030 LTDN SSO. With the CZ-2C/YZ-1S launch vehicle and such a low orbit, this must be a fairly massive satellite - anyone know the capacity of CZ-2C/YZ-1S to this orbit?

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