Shiyan 31

Unannounced launch of the Shiyan-31 experimental satellite, intended to verify new optical imaging technologies, from Jiuquan using a Yuanzheng-3 upper stage; the mission marked the 599th Long March flight.

Outcome

Success

Orbit

PO

Polar orbit

Payload to orbit

2 T (est.)

Flight

96th

of 101 Long March 2D flights

Date and time

13 October 2025, 10:00 UTC

Rocket

Long March 2D

Builder

CASC

Launch site

Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China

Payload

Government/Top Secret

International designator

2025-227

Launches in 2025

237th of 329

See it in orbit

Space Atlas shows the satellites and rocket stages from this launch in 3D.

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