2021-091B is a payload in SSO orbit, operated by Nanjing University / Shanghai Academy of Space Technology (CASC 8th Acad), launched 2021.
| Orbit class | SSO |
| Inclination | 97.4481° |
| Eccentricity | 0.0012661 |
| Period | 94.8 min |
| Apogee | 519 km |
| Perigee | 501 km |
| Mean motion | 15.18652369 rev/day |
| RAAN | 15.4933° |
| Arg of perigee | 338.3709° |
| Mean anomaly | 21.6989° |
| B* | 2.0210e-5 |
| Rev at epoch | 26,202 |
1 49316U 21091B 26188.22296758 .00000351 00000-0 20210-4 0 99902 49316 97.4481 15.4933 0012661 338.3709 21.6989 15.18652369262025{
"OBJECT_NAME": "2021-091B",
"OBJECT_ID": "2021-091B",
"EPOCH": "2026-07-07T05:21:04.399+00:00",
"MEAN_MOTION": 15.18652369,
"ECCENTRICITY": 0.0012661,
"INCLINATION": 97.4481,
"RA_OF_ASC_NODE": 15.4933,
"ARG_OF_PERICENTER": 338.3709,
"MEAN_ANOMALY": 21.6989,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 49316,
"REV_AT_EPOCH": 26202,
"BSTAR": 0.00002021,
"MEAN_MOTION_DOT": 0.00000351,
"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 | 2021-091B |
| Operator | Nanjing University / 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 |