TIANHUI 4B is a payload in LEO orbit, operated by State Surveying and Mapping Geographic Information Bureau, launched 2021.
| Orbit class | LEO |
| Inclination | 88.9727° |
| Eccentricity | 0.0007991 |
| Period | 93.1 min |
| Apogee | 432 km |
| Perigee | 421 km |
| Mean motion | 15.46784685 rev/day |
| RAAN | 319.8503° |
| Arg of perigee | 15.9977° |
| Mean anomaly | 344.1534° |
| B* | 1.5881e-4 |
| Rev at epoch | 25,293 |
1 50573U 21134B 26188.22024433 .00007993 00000-0 15881-3 0 99902 50573 88.9727 319.8503 0007991 15.9977 344.1534 15.46784685252935{
"OBJECT_NAME": "TIANHUI 4B",
"OBJECT_ID": "2021-134B",
"EPOCH": "2026-07-07T05:17:09.11+00:00",
"MEAN_MOTION": 15.46784685,
"ECCENTRICITY": 0.0007991,
"INCLINATION": 88.9727,
"RA_OF_ASC_NODE": 319.8503,
"ARG_OF_PERICENTER": 15.9977,
"MEAN_ANOMALY": 344.1534,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 50573,
"REV_AT_EPOCH": 25293,
"BSTAR": 0.00015881,
"MEAN_MOTION_DOT": 0.00007993,
"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 | TIANHUI 4B |
| Operator | State Surveying and Mapping Geographic Information BureauHIGHvia 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 |