Key statistics
Satellite INMARSAT 2-F4 at a glance.
Uptime
12137
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
11.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for INMARSAT 2-F4.
Object identification
Identified? True
Debris? False
Object name: INMARSAT 2-F4
International designator: 1992-021B
Object number (NORAD): 21940
Object ID (CCSDS): 21940
Country: INTERNATIONAL MARITIME SATELLITE ORGANIZATION (INMARSAT) (IM)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1470.247 minutes
Inclination: 11.8354 deg
SMA: 42830.551 km
Apoapsis: 36488.158 km
Periapsis: 36416.674 km
RAAN: 17.5239 deg
Eccentricy: 0.0008345
Argument of periapsis: 152.5772 deg
Mean anomaly: 42.4677 deg
Mean motion: 0.97942744 rev/day
Mean motion (dot): -0.0000007 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 6:05 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 12:18 p.m. UTC
TLE line 0: 0 INMARSAT 2-F4
TLE line 1: 1 21940U 92021B 25187.51312117 -.00000070 00000-0 00000-0 0 9992
TLE line 2: 2 21940 11.8354 17.5239 0008345 152.5772 42.4677 0.97942744 47261
Live tracking on map
Real-time ground track for satellite INMARSAT 2-F4.
In-orbit conjunctions
There are no conjunctions computed for INMARSAT 2-F4, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Télécom 2B and Inmarsat-2 F4 are French and International communications satellites operating in GEO.
INMARSAT 2-F4 was lifted into orbit during the mission ‘Ariane 44L | Télécom 2B & Inmarsat-2 F4’, on board a Ariane 44L space rocket.
The launch took place on April 15, 1992, 11:25 p.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 44L | Télécom 2B & Inmarsat-2 F4
Agency: N/A
Status: Launch Successful
Launch date: April 15, 1992, 11:25 p.m. UTC
Rocket: Ariane 44L
Launch pad: Ariane Launch Area 2
Location: Guiana Space Centre, French Guiana
...
Latest news about this satellite
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