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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
15 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 15 hours ago
0 OAO 1
1 02142U 66031A   25183.44979667  .00000073  00000-0  32421-4 0  9992
2 02142  35.0460  81.9972 0006184  72.2040 287.9322 14.34574942100837
Epoch: 2025-07-02T10:47Z
TLE epoch observation values (Epoch: 2025-07-02T10:47:42.432Z)
Latitude
-0.00001°
Longitude
-0.66034°
Altitude
774.074 km
Speed
7.47 km/s
True Right ascension
05h 27m 59s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
31.06105°
Longitude
54.51431°
Altitude
772.145 km
Speed
7.475 km/s
Apparent Right ascension
06h 06m 09s
Apparent Declination
-3° 32' 28"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
13:52:21
Azimuth
284.98° WNW
Elevation
-22.446°
Doppler factor
1
Orbital elements
Apogee altitude
784.022 km
Perigee altitude
775.169 km
Semi-major axis
7,157.733 km
Eccentricity
0.00062
Inclination
35.046°
RAAN
81.9972°
Arg. of periapsis
72.204°
True anomaly
Unknown
Mean anomaly
287.9322°
Eccentric anomaly
Unknown
Mean motion
3.5841 °/min
Orbital period
100.44 mins
BSTAR
0.000032421
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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.
7 mins2025-07-03 02:20:23.660Z249.909° W2025-07-03 02:23:23.660Z212.099° SW20.943°2025-07-03 02:27:23.660Z159.268° S
6 mins2025-07-03 20:26:23.660Z195.173° SSW2025-07-03 20:29:23.660Z147.894° SSE23.134°2025-07-03 20:32:23.660Z108.71° ESE
8 mins2025-07-03 22:11:23.660Z235.681° WSW2025-07-03 22:14:23.660Z181.484° SSW36.096°2025-07-03 22:19:23.660Z100.973° ESE
8 mins2025-07-03 23:57:23.660Z251.476° W2025-07-04 00:00:23.660Z196.298° SSW36.003°2025-07-04 00:05:23.660Z117.327° SE
7 mins2025-07-04 01:43:23.660Z246.581° WSW2025-07-04 01:46:23.660Z203.233° SW23.05°2025-07-04 01:50:23.660Z152.057° SSE
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