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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836 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
TRW
Mission
Defense Early Warn
Bus & Motor
VELA, BE-3
Mass
~227 kg wet, 125 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Poly, 0.7 m
Radar Cross Section
2.240 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: in 4 days
TLE from in 4 days
0 OPS 3662 (VELA 3)
1 00836U 64040A 25265.19276825 .00000451 00000-0 00000-0 0 9991
2 00836 51.6703 124.2302 4692705 286.4494 0.6682 0.23919196 10356Epoch: 2025-09-22T04:37Z
TLE epoch observation values (Epoch: 2025-09-22T04:37:35.176Z)
Latitude
-48.23758°
Longitude
-8.62872°
Altitude
51,755.209 km
Speed
3.175 km/s
True Right ascension
04h 08m 16s
True Declination
-48° 12' 60"
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
22:24:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
154,688.773 km
Perigee altitude
51,802.409 km
Semi-major axis
109,623.728 km
Eccentricity
0.46927
Inclination
51.6703°
RAAN
124.2302°
Arg. of periapsis
286.4494°
True anomaly
2.09453°
Mean anomaly
0.6682°
Eccentric anomaly
1.25893°
Mean motion
0.0598 °/min
Orbital period
6,020.27 mins
BSTAR
0
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Other satellites on launch #40 in the year 1964 (1964-07-17 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.OPS 3662 (VELA 3) 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. |
|---|---|---|---|---|---|---|---|
| 977 mins | 2025-09-18 10:42:31.897Z | 86.426° E | 2025-09-18 17:38:31.897Z | 194.983° SSW | 44.729° | 2025-09-19 02:59:31.897Z | 321.048° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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