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China Aerospace Science and Technology CorporationLong March 4CLaunch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China

Long March 4C | Shiyan 28 B-02

Countdown

No countdown — this launch time is not yet known to the minute.

August 17, 2025 · 08:55 UTCAdd to calendar

Launch Successful

China Aerospace Science and Technology Corporation's 536th launch · 35th this year · humanity's 7,032nd orbital launch attempt

The launch vehicle successfully inserted its payload(s) into the target orbit(s).

Window: Aug 17, 08:55 – Aug 17, 09:20 UTC

Flight preview

Shiyan 28 B-02

Satellite officially named for "space environment detection" purposes, exact details unknown.

Government/Top Secret · Low Earth Orbit (LEO)

Booster

No booster details available.

Watch

No webcast announced yet.

Updates

  • Launch success.

    Cosmic_Penguin · 8/17/2025 · source

  • Added launch per NOTAMs; Payload and launch vehicle identities uncertain.

    Cosmic_Penguin · 8/13/2025 · source

Pad — Launch Complex 3 (LC-3/LA-1)

Local pad time: Aug 17, 4:55 PM GMT+8

108 launches from this pad · 242 from Xichang Satellite Launch Center, People's Republic of China

Map of Launch Complex 3 (LC-3/LA-1)Open in maps