Key statistics
Satellite ORBCOMM FM 21 at a glance.
Uptime
9839
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
45.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for ORBCOMM FM 21.
Object identification
Identified? True
Debris? False
Object name: ORBCOMM FM 21
International designator: 1998-053A
Object number (NORAD): 25475
Object ID (CCSDS): 25475
Country: ORBITAL TELECOMMUNICATIONS SATELLITE (GLOBALSTAR) (ORB)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 100.176 minutes
Inclination: 45.0078 deg
SMA: 7145.008 km
Apoapsis: 769.602 km
Periapsis: 764.144 km
RAAN: 276.1011 deg
Eccentricy: 0.00038196
Argument of periapsis: 253.7435 deg
Mean anomaly: 106.2993 deg
Mean motion: 14.37469593 rev/day
Mean motion (dot): 0.00001113 rev/day2
B* drag term: 0.0004154438 1/REarth
Two-line elements (TLE)
Creation date: Aug. 31, 2025, 2:26 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 30, 2025, 7:18 p.m. UTC
TLE line 0: 0 ORBCOMM FM 21
TLE line 1: 1 25475U 98053A 25242.80476760 .00001113 00000-0 41544-3 0 9998
TLE line 2: 2 25475 45.0078 276.1011 0003820 253.7435 106.2993 14.37469593407988
Live tracking on map
Real-time ground track for satellite ORBCOMM FM 21.
In-orbit conjunctions
There are no conjunctions computed for ORBCOMM FM 21, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
ORBCOMM FM 21 was lifted into orbit during the mission ‘Pegasus XL HAPS | Orbcomm-C1 - C8’, on board a Pegasus XL HAPS space rocket.
The launch took place on Sept. 23, 1998, 5:06 a.m. from Wallops Flight Facility.
For more information about the launch, click the button.
Pegasus XL HAPS | Orbcomm-C1 - C8
Agency: N/A
Status: Launch Successful
Launch date: Sept. 23, 1998, 5:06 a.m. UTC
Rocket: Pegasus XL HAPS
Launch pad: Wallops Flight Facility
Location: Air launch to orbit
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Latest news about this satellite
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