SHIYAN-4 (SY-4) is a payload in SSO orbit, operated by China Aerospace Corp, launched 2011.
| Orbit class | SSO |
| Inclination | 98.6948° |
| Eccentricity | 0.0024118 |
| Period | 100.6 min |
| Apogee | 805 km |
| Perigee | 771 km |
| Mean motion | 14.31135914 rev/day |
| RAAN | 207.0559° |
| Arg of perigee | 87.9024° |
| Mean anomaly | 300.4893° |
| B* | 6.5462e-5 |
| Rev at epoch | 76,173 |
1 37931U 11068B 26188.01865608 .00000129 00000-0 65462-4 0 99972 37931 98.6948 207.0559 0024118 87.9024 300.4893 14.31135914761736{
"OBJECT_NAME": "SHIYAN-4 (SY-4)",
"OBJECT_ID": "2011-068B",
"EPOCH": "2026-07-07T00:26:51.885+00:00",
"MEAN_MOTION": 14.31135914,
"ECCENTRICITY": 0.0024118,
"INCLINATION": 98.6948,
"RA_OF_ASC_NODE": 207.0559,
"ARG_OF_PERICENTER": 87.9024,
"MEAN_ANOMALY": 300.4893,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 37931,
"REV_AT_EPOCH": 76173,
"BSTAR": 0.000065462,
"MEAN_MOTION_DOT": 0.00000129,
"MEAN_MOTION_DDOT": 0
}Reconstructed from CelesTrak OMM mean-elements (element-set number is a placeholder). TLE/OMM data is approximate. Not for operational use or collision avoidance.
| Name | SHIYAN-4 (SY-4) |
| Operator | |
| Country | China |
| Launch date | |
| Launch mass (kg) | |
| Mission purpose | — |
| Object class |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Orbital regime |
| Status |