China launches science satellite duo – Satellite News Digest

Rocket: Chang Zheng 11; Payload: two GECAM astronomy satellites; Date: 9 December 2020, 2014 UTC; Launch site: Xichang Satellite Launch Center, China. The satellites were deployed into 587 km x 605 km x 29.00 degrees orbits.

http://www.sat-nd.com/archive/?id=2020121000

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