ORBCOMM FM 25, 25479
Orbit data source: Space-Track
ORBCOMM FM 25, 25479 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
25479 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
US / ORBRelated business
Manufacturer
OSC-Germantown
Mission
Non-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: 23 hours ago
TLE from 23 hours ago
0 ORBCOMM FM 25
1 25479U 98053E 25348.66261713 .00001443 00000-0 51289-3 0 9996
2 25479 45.0058 131.3533 0004238 85.6288 274.5045 14.38626786423720Epoch: 2025-12-14T15:54Z
TLE epoch observation values (Epoch: 2025-12-14T15:54:10.120Z)
Latitude
0.00002°
Longitude
169.23884°
Altitude
762.802 km
Speed
7.475 km/s
True Right ascension
08h 45m 24s
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
13:24:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
767.612 km
Perigee altitude
761.558 km
Semi-major axis
7,142.722 km
Eccentricity
0.00042
Inclination
45.0058°
RAAN
131.3533°
Arg. of periapsis
85.6288°
True anomaly
274.45608°
Mean anomaly
274.5045°
Eccentric anomaly
274.48029°
Mean motion
3.5954 °/min
Orbital period
100.13 mins
BSTAR
0.00051289
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #53 in the year 1998 (1998-09-23 UTC)
Did you know?
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 25 Visibility forecast
Loading observer location...
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 15:34:09.199Z | 285.685° WNW | 2025-12-15 15:38:09.199Z | 343.138° N | 36.558° | 2025-12-15 15:43:09.199Z | 71.276° E |
| 9 mins | 2025-12-15 17:20:09.199Z | 296.75° NW | 2025-12-15 17:24:09.199Z | 12.752° NNE | 42.88° | 2025-12-15 17:29:09.199Z | 100.794° ESE |
| 8 mins | 2025-12-15 19:06:09.199Z | 274.498° WNW | 2025-12-15 19:09:09.199Z | 218.788° SW | 33.81° | 2025-12-15 19:14:09.199Z | 146.114° SSE |
| 7 mins | 2025-12-16 11:24:09.199Z | 184.195° SSW | 2025-12-16 11:27:09.199Z | 141.402° SSE | 23.161° | 2025-12-16 11:31:09.199Z | 87.835° E |
| 9 mins | 2025-12-16 13:08:09.199Z | 243.955° WSW | 2025-12-16 13:12:09.199Z | 88.178° E | 44.906° | 2025-12-16 13:17:09.199Z | 66.864° 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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|