Spacecraft information: ORBCOMM FM21

Launch Details
Launched 22 September 1998
Flight ended –
Status Non-operational
Launch site Eastern Range Airspace
Owner ORBCOMM
NORAD ID 25475
COSPAR ID 1998-053A
Alternative names SLOT C1
Observing

Current orbital elements

Inclination 45.007°
Eccentricity 0.00012
RA ascending node 13.702 hr
Argument perigee 270.561°
Mean anomaly 89.510°
Orbital period 100.131 min
Epoch of osculation 30 Apr 2026, 13:49

See historical orbital elements »

Derived Quantities

Min Altitude 771.0 km
Mean Altitude 771.9 km
Peak Altitude 772.8 km

Launched alongside

ORBCOMM FM22 ORBCOMM FM23 ORBCOMM FM24 ORBCOMM FM25 ORBCOMM FM26 ORBCOMM FM27 ORBCOMM FM28 PEGASUS R/B(1) PEGASUS R/B(2)

Orbital History

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South El Monte

Latitude:
Longitude:
Timezone:

34.05°N
118.05°W
PDT

Color scheme


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Last updated: 03 May 2026, 18:18 UTC
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