SHIYAN-1 (SY-1)
Launch
Launched on Apr 18, 2004 from Launch Complex 3 (LC-3/LA-1), China aboard a Long March 2C.
Long March 2C | Shiyan Weixing 1 →Live · TLE epoch 2026-10-24 05:33 UTC
Orbit class
SSO — Sun-Synchronous (LEO at 96–102° inclination)
Operator
Chinese Government
Country
China
Manufacturer
—
Launched
Apr 18, 2004
Mass
—
Apogee
462 km
Perigee
457 km
Inclination
97.86°
Period
1.56 h
Altitude history
Apogee and perigee for SHIYAN-1 (SY-1) across 149 days of archived orbital elements (150 element sets, one per day).
Trend
Decaying
Change
-11.0 km
Rate
-0.07 km/day
Now
457 × 462 km
Apogee Perigee
Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.
Launched with
One other catalogued object still in orbit from launch 2004-012 (Long March 2C | Shiyan Weixing 1).
- CZ-2C R/B · 28222
Sources & further reading
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