LowEarth

INMARSAT 3-F5

NORAD 25153· COSPAR 1998-006B· Active satellite· Communications· GEO
Launch
Launched on Feb 4, 1998 from Ariane Launch Area 2, French Guiana aboard a Ariane 44LP.
Ariane 44LP | Inmarsat-3 F5 & Brasilsat B3
Live · TLE epoch 2026-09-08 08:42 UTC
Orbit class
GEO — Geostationary (~35,786 km, equatorial)
Operator
Inmarsat
Country
Inmarsat
Manufacturer
Launched
Feb 4, 1998
Mass
Apogee
35,815 km
Perigee
35,777 km
Inclination
9.88°
Period
23.94 h

Altitude history

Apogee and perigee for INMARSAT 3-F5 across 103 days of archived orbital elements (105 element sets, one per day).

Trend
Stable
Change
+0.1 km
Rate
+0.00 km/day
Now
35777 × 35815 km
357953581835772May 28Sep 9
Apogee Perigee

Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.

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