Chinese H-alpha Solar Explorer (CHASE), also named Xihe (Chinese: 羲和) after the solar deity,[1] is China's first solar observatory.

It was launched aboard a Long March 2D rocket on 14 October 2021.

CHASE is a 508 kg (1,120 lb) satellite operating at a 517-kilometer-altitude Sun-synchronous orbit, with an orbital period of around 94 minutes.

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