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OPS 3662 (VELA 3), 836

Orbit data source: Space-Track

OPS 3662 (VELA 3), 836 is a payload satellite owned by USAF SSD (US) in HEO that was launched on Fri, 17 Jul 1964 UTC via an ATLAS 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
836, 1964-040A
Orbit
HEO
Last TLE update
in 3 days
Origin
Manufacturer
TRW
Mission
Defense Early Warn
Bus & Motor
VELA, BE-3
Mass
~227 kg wet, 125 kg dry
Launch date (UTC)
1964-07-17 (61 years ago)
Launch vehicle
ATLAS AGENA D
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Poly, 1.4 m
Radar Cross Section
2.240 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from in 3 days
0 OPS 3662 (VELA 3)
1   836U 64040A   25118.98218664  .00000638  00000-0  00000+0 0  9998
2   836  50.8410 127.1506 4640902 292.7880   0.1915  0.23902827 53096
Epoch: 2025-04-28T23:34Z
Definitive object data (Epoch: 2025-04-28T23:34:20.925Z)
Latitude
-45.00309°
Longitude
-138.78303°
Altitude
52,037.298 km
Speed
3.165 km/s
True Right ascension
04h 47m 58s
True Declination
-44° 58' 56"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude
44.89406°
Longitude
-28.59426°
Altitude
119,838.609 km
Speed
1.638 km/s
Apparent Right ascension
12h 13m 27s
Apparent Declination
42° 08' 13"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
01:42:06
Azimuth
16.321° NNE
Elevation
-5.523°
Doppler factor
1
Orbital elements
Apogee altitude
154,194.172 km
Perigee altitude
52,397.118 km
Semi-major axis
109,673.782 km
Eccentricity
0.4640902
Inclination
50.841°
RAAN
127.1506°
Arg. of periapsis
292.788°
True anomaly
0.59062°
Mean anomaly
0.1915°
Eccentric anomaly
0.35733°
Mean motion
0.05976 °/min
BSTAR
Unknown
Orbital period
6024.4 mins
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Other satellites on launch #40 in the year 1964 (1964-07-17 UTC)

OPS 3662 (VELA 3) Visibility forecast

Observer location: undefined°, undefined°

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Start Az.
Max El. time (UTC)
Max El. Az.
Max El.
End time (UTC)
End Az.
1155 mins2025-04-25 21:33:29.772Z37.13° NE2025-04-26 07:21:29.772Z357.72° N44.455°2025-04-26 16:48:29.772Z323.802° NNW
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