▸Orbital parameters

Orbit class	GEO
Inclination	0.0237°
Eccentricity	0.0000435
Period	1436.1 min
Apogee	35,788 km
Perigee	35,784 km
Mean motion	1.00273097 rev/day
RAAN	37.0830°
Arg of perigee	157.5592°
Mean anomaly	177.5202°
B*	0.0000e+0
Rev at epoch	3,347

▸Two-line element set (TLE)

EPOCH Jul 7, 2026SOURCE CelesTrakDERIVED currentUPDATED Jul 7, 2026

1 42698U 17025A 26188.08497051 .00000000 00000-0 00000-0 0 9993

2 42698 0.0237 37.0830 0000435 157.5592 177.5202 1.00273097 33470

▸ source OMM (JSON)

{
  "OBJECT_NAME": "INMARSAT 5-F4",
  "OBJECT_ID": "2017-025A",
  "EPOCH": "2026-07-07T02:02:21.452+00:00",
  "MEAN_MOTION": 1.00273097,
  "ECCENTRICITY": 0.0000435,
  "INCLINATION": 0.0237,
  "RA_OF_ASC_NODE": 37.083,
  "ARG_OF_PERICENTER": 157.5592,
  "MEAN_ANOMALY": 177.5202,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 42698,
  "REV_AT_EPOCH": 3347,
  "BSTAR": 0,
  "MEAN_MOTION_DOT": 0,
  "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.

▸Satellite metadata

Name	INMARSAT 5-F4
Operator	International Maritime Satellite Organization Ltd,HIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree InmarsatMEDIUMvia Wikidata
Country	United Kingdom
Launch date	May 15, 2017HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	6070HIGHvia GCAT — Jonathan McDowell's General Catalog⚠

▸Data quality

Score90 / 100

Claims9

Sources2

TLEavailable

▸Sources

GCAT — Jonathan McDowell's General CatalogCC BY 4.0planet4589.org
WikidataCC0 1.0query.wikidata.org

▸Actions

GET /api/v1/satellites/42698

//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.