Key statistics
Satellite ORBCOMM FM 21 at a glance.
Uptime
9723
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: 100.19 minutes
Inclination: 45.0074 deg
SMA: 7145.675 km
Apoapsis: 769.546 km
Periapsis: 765.534 km
RAAN: 106.1207 deg
Eccentricy: 0.0002807
Argument of periapsis: 324.9579 deg
Mean anomaly: 35.1084 deg
Mean motion: 14.37268324 rev/day
Mean motion (dot): 0.00001216 rev/day2
B* drag term: 0.00045151 1/REarth
Two-line elements (TLE)
Creation date: May 7, 2025, 3:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 6, 2025, 3:55 p.m. UTC
TLE line 0: 0 ORBCOMM FM 21
TLE line 1: 1 25475U 98053A 25126.66365503 .00001216 00000-0 45151-3 0 9997
TLE line 2: 2 25475 45.0074 106.1207 0002807 324.9579 35.1084 14.37268324391271
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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