ORBCOMM FM 27, 25481
Orbit data source: Space-Track
ORBCOMM FM 27, 25481 is a payload satellite owned by Orbcomm (US) in LEO that was launched on Wed, 23 Sep 1998 UTC via a PEGASUS XL/HAPS launch vehicle from the Pegasus Launch, Eastern Range Air Space (ERAS). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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25481 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
US / ORBRelated business
Manufacturer
OSC-Germantown
Mission
Operational Commercial Communications
Bus & Motor
MICROSTAR, Unknown motor
Mass
42 kg wet, 42 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 4.2 m
Radar Cross Section
1.484 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 ORBCOMM FM 27
1 25481U 98053G 25348.71564185 .00001397 00000-0 49757-3 0 9999
2 25481 45.0030 131.2350 0001196 146.2496 213.8429 14.38662037423668Epoch: 2025-12-14T17:10Z
TLE epoch observation values (Epoch: 2025-12-14T17:10:31.455Z)
Latitude
-0.00002°
Longitude
149.97934°
Altitude
763.631 km
Speed
7.474 km/s
True Right ascension
08h 44m 56s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
13:23:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
765.323 km
Perigee altitude
763.614 km
Semi-major axis
7,142.605 km
Eccentricity
0.00012
Inclination
45.003°
RAAN
131.235°
Arg. of periapsis
146.2496°
True anomaly
213.83527°
Mean anomaly
213.8429°
Eccentric anomaly
213.83908°
Mean motion
3.59549 °/min
Orbital period
100.13 mins
BSTAR
0.00049757
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Other satellites on launch #53 in the year 1998 (1998-09-23 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.ORBCOMM FM 27 Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-12-15 15:09:11.747Z | 280.013° WNW | 2025-12-15 15:13:11.747Z | 340.875° N | 37.659° | 2025-12-15 15:18:11.747Z | 67.936° E |
| 9 mins | 2025-12-15 16:55:11.747Z | 297.114° NW | 2025-12-15 16:59:11.747Z | 11.861° NNE | 40.47° | 2025-12-15 17:04:11.747Z | 92.231° ESE |
| 8 mins | 2025-12-15 18:41:11.747Z | 282.511° WNW | 2025-12-15 18:44:11.747Z | 224.933° SW | 39.986° | 2025-12-15 18:49:11.747Z | 134.778° SE |
| 5 mins | 2025-12-16 11:00:11.747Z | 166.032° S | 2025-12-16 11:02:11.747Z | 140.773° SSE | 16.776° | 2025-12-16 11:05:11.747Z | 102.41° ESE |
| 9 mins | 2025-12-16 12:43:11.747Z | 230.877° WSW | 2025-12-16 12:47:11.747Z | 142.508° SSE | 43.003° | 2025-12-16 12:52:11.747Z | 69.289° E |
| 8 mins | 2025-12-16 14:29:11.747Z | 279.907° WNW | 2025-12-16 14:32:11.747Z | 338.519° N | 38.951° | 2025-12-16 14:37:11.747Z | 66.287° ENE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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