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: 20 hours ago
TLE from 20 hours ago
0 OAO 1
1 02142U 66031A 25301.63142502 .00000203 00000-0 77662-4 0 9996
2 02142 35.0443 156.0392 0007641 278.4419 81.5402 14.34616968117815Epoch: 2025-10-28T15:09Z
TLE epoch observation values (Epoch: 2025-10-28T15:09:15.121Z)
Latitude
-0.00004°
Longitude
-108.49001°
Altitude
774.494 km
Speed
7.469 km/s
True Right ascension
10h 24m 09s
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
07:10:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
784.925 km
Perigee altitude
773.987 km
Semi-major axis
7,157.593 km
Eccentricity
0.00076
Inclination
35.0443°
RAAN
156.0392°
Arg. of periapsis
278.4419°
True anomaly
81.62682°
Mean anomaly
81.5402°
Eccentric anomaly
81.58351°
Mean motion
3.5842 °/min
Orbital period
100.44 mins
BSTAR
0.000077662
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-29 18:07:40.120Z | 208.822° SW | 2025-10-29 18:10:40.120Z | 161.534° S | 27.307° | 2025-10-29 18:14:40.120Z | 104.296° ESE |
| 9 mins | 2025-10-29 19:52:40.120Z | 244.922° WSW | 2025-10-29 19:56:40.120Z | 172.583° S | 37.571° | 2025-10-29 20:01:40.120Z | 102.133° ESE |
| 9 mins | 2025-10-29 21:38:40.120Z | 256.242° W | 2025-10-29 21:42:40.120Z | 188.245° SSW | 34.278° | 2025-10-29 21:47:40.120Z | 122.06° SE |
| 6 mins | 2025-10-29 23:25:40.120Z | 240.938° WSW | 2025-10-29 23:28:40.120Z | 199.961° SSW | 19.19° | 2025-10-29 23:31:40.120Z | 164.154° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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