SZ-21 MODULE is a unknown in VLEO orbit, operated by China Manned Space Engineering Office, launched 2025.
| Orbit class | VLEO |
| Inclination | 41.4706° |
| Eccentricity | 0.0006295 |
| Period | 91.2 min |
| Apogee | 340 km |
| Perigee | 331 km |
| Mean motion | 15.78192992 rev/day |
| RAAN | 183.5562° |
| Arg of perigee | 162.6981° |
| Mean anomaly | 197.4080° |
| B* | 2.1756e-4 |
| Rev at epoch | 3,687 |
1 66515U 25246C 26188.03423706 .00038272 00000-0 21756-3 0 99982 66515 41.4706 183.5562 0006295 162.6981 197.4080 15.78192992 36878{
"OBJECT_NAME": "SZ-21 MODULE",
"OBJECT_ID": "2025-246C",
"EPOCH": "2026-07-07T00:49:18.082+00:00",
"MEAN_MOTION": 15.78192992,
"ECCENTRICITY": 0.0006295,
"INCLINATION": 41.4706,
"RA_OF_ASC_NODE": 183.5562,
"ARG_OF_PERICENTER": 162.6981,
"MEAN_ANOMALY": 197.408,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 66515,
"REV_AT_EPOCH": 3687,
"BSTAR": 0.00021756,
"MEAN_MOTION_DOT": 0.00038272,
"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 | SZ-21 MODULE |
| Operator | |
| Country | China |
| Launch date | |
| Launch mass (kg) | |
| Mission purpose | — |
| Object class | UNKNOWN |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Status |