Key statistics
Satellite INMARSAT 3-F1 at a glance.
Uptime
10854
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
10.2
Latest
Satellite identification and parameters
Extended collection of information and parameters for INMARSAT 3-F1.
Object identification
Identified? True
Debris? False
Object name: INMARSAT 3-F1
International designator: 1996-020A
Object number (NORAD): 23839
Object ID (CCSDS): 23839
Country: INTERNATIONAL MARITIME SATELLITE ORGANIZATION (INMARSAT) (IM)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1440.342 minutes
Inclination: 10.2293 deg
SMA: 42247.792 km
Apoapsis: 35907.08 km
Periapsis: 35832.234 km
RAAN: 48.2525 deg
Eccentricy: 0.0008858
Argument of periapsis: 211.5865 deg
Mean anomaly: 223.811 deg
Mean motion: 0.99976226 rev/day
Mean motion (dot): -0.00000128 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Dec. 21, 2025, 3:42 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 20, 2025, 8:28 p.m. UTC
TLE line 0: 0 INMARSAT 3-F1
TLE line 1: 1 23839U 96020A 25354.85317476 -.00000128 00000-0 00000-0 0 9994
TLE line 2: 2 23839 10.2293 48.2525 0008858 211.5865 223.8110 0.99976226108474
Live tracking on map
Real-time ground track for satellite INMARSAT 3-F1.
In-orbit conjunctions
There are no conjunctions computed for INMARSAT 3-F1, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Launched in 1996-8, the Inmarsat-3s were built by Lockheed Martin Astro Space (now Lockheed Martin Missiles & Space) of the USA, responsible for the basic spacecraft, and the European Matra Marconi Space (now Astrium), which developed the communications payload.
INMARSAT 3-F1 was lifted into orbit during the mission ‘Atlas IIA | INMARSAT III F-1’, on board a Atlas IIA space rocket.
The launch took place on April 3, 1996, 11:01 p.m. from Launch Complex 36A.
For more information about the launch, click the button.
Atlas IIA | INMARSAT III F-1
Agency: N/A
Status: Launch Successful
Launch date: April 3, 1996, 11:01 p.m. UTC
Rocket: Atlas IIA
Launch pad: Launch Complex 36A
Location: Cape Canaveral SFS, FL, USA
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Latest news about this satellite
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