SHIJIAN-21 (SJ-21) is a payload in GEO orbit, operated by Shanghai Academy of Space Technology (CASC 8th Acad), launched 2021.
| Orbit class | GEO |
| Inclination | 5.1559° |
| Eccentricity | 0.0050088 |
| Period | 1436.2 min |
| Apogee | 36,001 km |
| Perigee | 35,578 km |
| Mean motion | 1.00261189 rev/day |
| RAAN | 61.0612° |
| Arg of perigee | 168.1668° |
| Mean anomaly | 36.5840° |
| B* | 0.0000e+0 |
| Rev at epoch | 555 |
1 49330U 21094A 26187.59326125 -.00000337 00000-0 00000-0 0 99962 49330 5.1559 61.0612 0050088 168.1668 36.5840 1.00261189 5558{
"OBJECT_NAME": "SHIJIAN-21 (SJ-21)",
"OBJECT_ID": "2021-094A",
"EPOCH": "2026-07-06T14:14:17.772+00:00",
"MEAN_MOTION": 1.00261189,
"ECCENTRICITY": 0.00500875,
"INCLINATION": 5.1559,
"RA_OF_ASC_NODE": 61.0612,
"ARG_OF_PERICENTER": 168.1668,
"MEAN_ANOMALY": 36.584,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 49330,
"REV_AT_EPOCH": 555,
"BSTAR": 0,
"MEAN_MOTION_DOT": -0.00000337,
"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 | SHIJIAN-21 (SJ-21) |
| Operator | Shanghai Academy of Space Technology (CASC 8th Acad)HIGHvia GCAT — Jonathan McDowell's General Catalog |
| Country | China |
| Launch date | |
| Launch mass (kg) | |
| Mission purpose | — |
| Object class | PAYLOADHIGH |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Orbital regime |
| Status | UNKNOWN |