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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Identifier
Orbit
Country
USRelated business
Manufacturer
TRW
Mission
Non-operational spacecraft
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, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 OPS 3151
1 09803U 77007A 26256.28833538 -.00000053 00000-0 00000-0 0 9991
2 09803 4.5056 283.6745 0077537 39.8959 30.6578 0.97528305 25510Epoch: 2026-09-13T06:55Z
TLE epoch observation values (Epoch: 2026-09-13T06:55:12.176Z)
Latitude
4.25607°
Longitude
-101.44716°
Altitude
36,285.331 km
Speed
3.067 km/s
True Right ascension
23h 38m 33s
True Declination
4° 15' 07"
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
10:13:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
36,907.751 km
Perigee altitude
36,241.664 km
Semi-major axis
42,952.844 km
Eccentricity
0.00775
Inclination
4.5056°
RAAN
283.6745°
Arg. of periapsis
39.8959°
True anomaly
31.11466°
Mean anomaly
30.6578°
Eccentric anomaly
30.88585°
Mean motion
0.24381 °/min
Orbital period
1,476.55 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 | 2026-09-13 17:43:32.860Z | 182.032° SSW | 2026-09-14 08:46:32.860Z | 191.444° SSW | 48.402° | 2026-09-14 17:43:32.860Z | 196.136° SSW |
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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
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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