OAO 1, 2142
Orbit data source: Space-Track
OAO 1, 2142 is a payload satellite owned by GSFC (US) in LEO that was launched on Fri, 08 Apr 1966 UTC via an ATLAS SLV-3 AGENA D 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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2142 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Grummann
Mission
Spacecraft
Bus & Motor
OAO, Unknown motor
Mass
1,769 kg wet, 1,769 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 OAO 1
1 02142U 66031A 25346.17464501 .00000254 00000-0 95351-4 0 9991
2 02142 35.0460 272.5615 0007564 268.0698 91.9124 14.34638782124210Epoch: 2025-12-12T04:11Z
TLE epoch observation values (Epoch: 2025-12-12T04:11:29.328Z)
Latitude
0.00001°
Longitude
128.56927°
Altitude
775.406 km
Speed
7.468 km/s
True Right ascension
18h 10m 14s
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
14:51:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.797 km
Perigee altitude
773.97 km
Semi-major axis
7,157.521 km
Eccentricity
0.00076
Inclination
35.046°
RAAN
272.5615°
Arg. of periapsis
268.0698°
True anomaly
91.99903°
Mean anomaly
91.9124°
Eccentric anomaly
91.95571°
Mean motion
3.58426 °/min
Orbital period
100.44 mins
BSTAR
0.000095351
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Other satellites on launch #31 in the year 1966 (1966-04-08 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.OAO 1 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-12-12 22:46:38.867Z | 211.635° SW | 2025-12-12 22:50:38.867Z | 161.689° S | 24.332° | 2025-12-12 22:54:38.867Z | 106.319° ESE |
| 9 mins | 2025-12-13 00:32:38.867Z | 241.19° WSW | 2025-12-13 00:36:38.867Z | 173.405° S | 36.732° | 2025-12-13 00:41:38.867Z | 100.551° ESE |
| 9 mins | 2025-12-13 02:18:38.867Z | 256.208° W | 2025-12-13 02:22:38.867Z | 188.643° SSW | 35.928° | 2025-12-13 02:27:38.867Z | 117.721° SE |
| 7 mins | 2025-12-13 04:05:38.867Z | 243.722° WSW | 2025-12-13 04:08:38.867Z | 199.633° SSW | 22.351° | 2025-12-13 04:12:38.867Z | 152.017° SSE |
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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