INMARSAT 4-F1 is a payload in GEO orbit, operated by International Maritime Satellite Organization Ltd,, launched 2005.
| Orbit class | GEO |
| Inclination | 5.1927° |
| Eccentricity | 0.0002742 |
| Period | 1436.1 min |
| Apogee | 35,798 km |
| Perigee | 35,775 km |
| Mean motion | 1.00271311 rev/day |
| RAAN | 42.7722° |
| Arg of perigee | 67.1906° |
| Mean anomaly | 159.4982° |
| B* | 0.0000e+0 |
| Rev at epoch | 7,786 |
1 28628U 05009A 26187.46363220 .00000044 00000-0 00000-0 0 99982 28628 5.1927 42.7722 0002742 67.1906 159.4982 1.00271311 77862{
"OBJECT_NAME": "INMARSAT 4-F1",
"OBJECT_ID": "2005-009A",
"EPOCH": "2026-07-06T11:07:37.822+00:00",
"MEAN_MOTION": 1.00271311,
"ECCENTRICITY": 0.00027419,
"INCLINATION": 5.1927,
"RA_OF_ASC_NODE": 42.7722,
"ARG_OF_PERICENTER": 67.1906,
"MEAN_ANOMALY": 159.4982,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 28628,
"REV_AT_EPOCH": 7786,
"BSTAR": 0,
"MEAN_MOTION_DOT": 4.4e-7,
"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 | INMARSAT 4-F1 |
| Operator | International Maritime Satellite Organization Ltd,HIGHvia GCAT — Jonathan McDowell's General Catalog |
| Country | United Kingdom |
| 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 |