SLOT C1 - Norad ID: 25475
| Spacetrack Directory Name | ORBCOMM FM 21 |
| Alternative name | SLOT C1 |
| Group | ORBCOMM |
| Follow ORBCOMM FM 21 | ORBCOMM FM 21 Tracker |
| Group follow ORBCOMM | Tracker ORBCOMM |
| Pass predictions ORBCOMM FM 21 | Pass predictions ORBCOMM FM 21 |
| Orbit launches |
|
| Days in orbit | 10216 |
| Country/organisation of origin | ORBCOMM (ORB) |
| Starting point | ERAS (Wallops Flight Facility, USA) |
| Type | Satellite |
| Categories | |
| Perigee | 779 km |
| Apogee | 783 km |
| Orbit slope (inclination) | 45.01° |
| Laps per day | 14 |
| Orbit | LEO (Non-Polar Inclined) |
| Height ORBCOMM FM 21 | 768.82 km |
ORBCOMM FM21, also known as Orbcomm C1, is a MicroStar configuration satellite manufactured by OSCG for the purpose of communication M2M/IoT. Launched on September 23, 1998, from ERAS using the Pegasus XL/HAPS launch vehicle, it has dimensions of 0.2 meters in length and 1 meter in diameter with a span of 4.3 meters. The satellite weighs 42 kg at launch and dry mass remains the same. It is powered by two deployable solar arrays and batteries and equipped with an Orbcomm payload for its mission. The satellites shape consists of a cylinder plus two panels and antennas, and it has a radar cross-section (RCS) value of 0.6898. ORBCOMM FM21 was launched into space by the owner ORBC and operated for approximately four years as part of its lifetime expectation.
satellite ORBCOMM FM 21 Date of exalting 23.09.1998y. Average height of ISS ORBCOMM FM 21 hundred 768.82 km. Average velocity ORBCOMM FM 21 is 26899.49 km/h. Inclination ORBCOMM FM 21 satellite 45.01°.