HST is a payload in LEO orbit, operated by NASA Goddard Space Flight Center, launched 1990.
| Orbit class | LEO |
| Inclination | 28.4736° |
| Eccentricity | 0.0001830 |
| Period | 94.1 min |
| Apogee | 474 km |
| Perigee | 472 km |
| Mean motion | 15.30991511 rev/day |
| RAAN | 308.9719° |
| Arg of perigee | 18.2005° |
| Mean anomaly | 341.8656° |
| B* | 1.8213e-4 |
| Rev at epoch | 79,152 |
1 20580U 90037B 26187.43980132 .00005846 00000-0 18213-3 0 99992 20580 28.4736 308.9719 0001830 18.2005 341.8656 15.30991511791524{
"OBJECT_NAME": "HST",
"OBJECT_ID": "1990-037B",
"EPOCH": "2026-07-06T10:33:18.834+00:00",
"MEAN_MOTION": 15.30991511,
"ECCENTRICITY": 0.000183,
"INCLINATION": 28.4736,
"RA_OF_ASC_NODE": 308.9719,
"ARG_OF_PERICENTER": 18.2005,
"MEAN_ANOMALY": 341.8656,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 20580,
"REV_AT_EPOCH": 79152,
"BSTAR": 0.00018213,
"MEAN_MOTION_DOT": 0.00005846,
"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 | HST |
| Operator | NASA Goddard Space Flight CenterHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree |
| Country | United States |
| Launch date | |
| Launch mass (kg) |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Mission purpose | — |
| Object class |
| Orbital regime |
| Status |