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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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Identifier
2142, 1966-031A
Orbit
LEO
Last TLE update
19 hours ago
Origin
Manufacturer
Grummann
Mission
Civil Astronomy
Bus & Motor
OAO, Unknown motor
Mass
1,769 kg wet, 1,769 kg dry
Launch date (UTC)
1966-04-08 (59 years ago)
Launch vehicle
ATLAS SLV-3 AGENA D
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Oct Cyl + 2 Pan, 6.5 m
Radar Cross Section
9.480 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 19 hours ago
0 OAO 1
1 02142U 66031A   25182.05776887  .00000063  00000-0  28684-4 0  9992
2 02142  35.0459  89.6054 0006230  60.1082 300.0224 14.34574650100637
Epoch: 2025-07-01T01:23Z
TLE epoch observation values (Epoch: 2025-07-01T01:23:11.23Z)
Latitude
-0.00001°
Longitude
149.44991°
Altitude
773.207 km
Speed
7.471 km/s
True Right ascension
05h 58m 25s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
35.03155°
Longitude
-131.03003°
Altitude
772.944 km
Speed
7.475 km/s
Apparent Right ascension
14h 51m 08s
Apparent Declination
0° 09' 46"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
07:49:18
Azimuth
79.812° E
Elevation
-11.689°
Doppler factor
1
Orbital elements
Apogee altitude
784.056 km
Perigee altitude
775.137 km
Semi-major axis
7,157.734 km
Eccentricity
0.00062
Inclination
35.0459°
RAAN
89.6054°
Arg. of periapsis
60.1082°
True anomaly
Unknown
Mean anomaly
300.0224°
Eccentric anomaly
Unknown
Mean motion
3.5841 °/min
Orbital period
100.44 mins
BSTAR
0.000028684
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Other satellites on launch #31 in the year 1966 (1966-04-08 UTC)

OAO 1 Visibility forecast

Observer location: undefined°, undefined°

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.
9 mins2025-07-01 21:39:16.272Z219.56° SW2025-07-01 21:44:16.272Z150.184° SSE26.844°2025-07-01 21:48:16.272Z100.852° ESE
8 mins2025-07-01 23:26:16.272Z242.043° WSW2025-07-01 23:29:16.272Z189.912° SSW37.088°2025-07-01 23:34:16.272Z103.563° ESE
8 mins2025-07-02 01:12:16.272Z252.671° W2025-07-02 01:15:16.272Z201.704° SSW33.913°2025-07-02 01:20:16.272Z123.753° SE
5 mins2025-07-02 02:59:16.272Z234.568° WSW2025-07-02 03:01:16.272Z206.467° SW19.17°2025-07-02 03:04:16.272Z167.946° S
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