OPS 3151, 9803
Orbit data source: Space-Track
OPS 3151, 9803 is a payload satellite owned by SAMSO (US) in GEO that was launched on Sun, 06 Feb 1977 UTC via a TITAN IIIC 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.
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9803 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
TRW
Mission
Defense Early Warn
Bus & Motor
DSP P2, MRE-4
Mass
1,040 kg wet, ~980 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 4 Pan, Unknown HBR
Radar Cross Section
27.525 m²
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 OPS 3151
1 09803U 77007A 25260.19889816 -.00000085 00000-0 00000-0 0 9990
2 09803 5.4287 286.6688 0078621 30.5096 334.5317 0.97528456 21992Epoch: 2025-09-17T04:46Z
TLE epoch observation values (Epoch: 2025-09-17T04:46:24.801Z)
Latitude
0.45154°
Longitude
-136.67465°
Altitude
36,268.536 km
Speed
3.068 km/s
True Right ascension
19h 25m 13s
True Declination
0° 27' 04"
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
18:29:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,912.358 km
Perigee altitude
36,236.96 km
Semi-major axis
42,952.796 km
Eccentricity
0.00786
Inclination
5.4287°
RAAN
286.6688°
Arg. of periapsis
30.5096°
True anomaly
334.14083°
Mean anomaly
334.5317°
Eccentric anomaly
334.33661°
Mean motion
0.24381 °/min
Orbital period
1,476.54 mins
BSTAR
0
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Other satellites on launch #7 in the year 1977 (1977-02-06 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.OPS 3151 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. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2025-09-18 01:41:18.416Z | 230.112° WSW | 2025-09-18 10:42:18.416Z | 239.581° WSW | 27.272° | 2025-09-19 01:41:18.416Z | 238.592° WSW |
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9803 neighbors
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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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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