ORBCOMM FM 36, 25984
Orbit data source: Space-Track
ORBCOMM FM 36, 25984 is a payload satellite owned by Orbcomm (US) in LEO that was launched on Sat, 04 Dec 1999 UTC via a PEGASUS XL/HAPS launch vehicle from the Air Force Eastern Test Range (AFETR). 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
25984 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
US / ORBRelated business
Manufacturer
OSC-Germantown
Mission
Non-operational Commercial Communications
Bus & Motor
MICROSTAR, Unknown motor
Mass
44 kg wet, 44 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: 2 days ago
TLE from 2 days ago
0 ORBCOMM FM 36
1 25984U 99065E 26171.23233994 .00000646 00000-0 25224-3 0 9993
2 25984 45.0374 145.1294 0004959 328.6317 31.4236 14.39201742387422Epoch: 2026-06-20T05:34Z
TLE epoch observation values (Epoch: 2026-06-20T05:34:34.170Z)
Latitude
-0.00002°
Longitude
153.03708°
Altitude
758.12 km
Speed
7.478 km/s
True Right ascension
09h 40m 31s
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
23:09:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
766.219 km
Perigee altitude
759.137 km
Semi-major axis
7,140.815 km
Eccentricity
0.0005
Inclination
45.0374°
RAAN
145.1294°
Arg. of periapsis
328.6317°
True anomaly
31.45324°
Mean anomaly
31.4236°
Eccentric anomaly
31.43842°
Mean motion
3.59684 °/min
Orbital period
100.09 mins
BSTAR
0.00025224
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 #65 in the year 1999 (1999-12-04 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 36 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 | 2026-06-23 00:23:53.699Z | 215.029° SW | 2026-06-23 00:27:53.699Z | 152.308° SSE | 36.083° | 2026-06-23 00:32:53.699Z | 74.375° E |
| 9 mins | 2026-06-23 02:08:53.699Z | 263.968° W | 2026-06-23 02:12:53.699Z | 327.158° NNW | 41.801° | 2026-06-23 02:17:53.699Z | 64.685° ENE |
| 9 mins | 2026-06-23 03:54:53.699Z | 293.372° NW | 2026-06-23 03:58:53.699Z | 7.404° NNE | 37.111° | 2026-06-23 04:03:53.699Z | 78.674° E |
| 8 mins | 2026-06-23 05:40:53.699Z | 295.164° NW | 2026-06-23 05:43:53.699Z | 315.324° NNW | 44.118° | 2026-06-23 05:48:53.699Z | 111.554° ESE |
| 7 mins | 2026-06-23 07:25:53.699Z | 268.639° W | 2026-06-23 07:28:53.699Z | 223.621° SW | 25.962° | 2026-06-23 07:32:53.699Z | 165.544° S |
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 |
|---|