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: 7 hours ago
TLE from 7 hours ago
0 OAO 1
1 02142U 66031A 25316.31686903 .00000320 00000-0 11857-3 0 9998
2 02142 35.0456 75.7642 0006647 29.5743 330.5320 14.34623611119927Epoch: 2025-11-12T07:36Z
TLE epoch observation values (Epoch: 2025-11-12T07:36:17.484Z)
Latitude
0.00002°
Longitude
-89.99944°
Altitude
771.133 km
Speed
7.473 km/s
True Right ascension
05h 03m 03s
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
10:37:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.192 km
Perigee altitude
774.676 km
Semi-major axis
7,157.571 km
Eccentricity
0.00066
Inclination
35.0456°
RAAN
75.7642°
Arg. of periapsis
29.5743°
True anomaly
330.4945°
Mean anomaly
330.532°
Eccentric anomaly
330.51325°
Mean motion
3.58422 °/min
Orbital period
100.44 mins
BSTAR
0.00011857
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-11-12 14:37:43.077Z | 256.512° W | 2025-11-12 14:42:43.077Z | 190.377° SSW | 37.723° | 2025-11-12 14:47:43.077Z | 108.929° ESE |
| 7 mins | 2025-11-12 16:25:43.077Z | 249.713° W | 2025-11-12 16:28:43.077Z | 199.945° SSW | 29.249° | 2025-11-12 16:32:43.077Z | 139.861° SSE |
| 4 mins | 2025-11-13 10:32:43.077Z | 165.26° S | 2025-11-13 10:33:43.077Z | 152.681° SSE | 14.915° | 2025-11-13 10:36:43.077Z | 117.564° SE |
| 8 mins | 2025-11-13 12:15:43.077Z | 223.784° SW | 2025-11-13 12:19:43.077Z | 157.859° S | 31.073° | 2025-11-13 12:23:43.077Z | 101.544° ESE |
| 8 mins | 2025-11-13 14:01:43.077Z | 248.92° W | 2025-11-13 14:05:43.077Z | 166.783° S | 37.621° | 2025-11-13 14:09:43.077Z | 108.487° ESE |
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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