OPS 3674 (VELA 4), 837
Orbit data source: Space-Track
OPS 3674 (VELA 4), 837 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). Payloads include a variety of satellites, spacecraft, and rockets 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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837 intel report (Beta)
OPS 3674 (VELA 4) details
| Identifier | |
| Orbit | HEO |
| Last TLE update | 2 days ago |
| Origin | |
| Manufacturer | TRW |
| Mission | Defense Early Warn |
| Bus & Motor | VELA, BE-3 |
| Mass | ~217 kg wet, 125 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| 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 2 days ago
0 OPS 3674 (VELA 4)
1 00837U 64040B 24366.51813557 .00000504 00000-0 00000-0 0 9997
2 00837 48.6004 133.9677 4079146 262.2032 0.3822 0.23996304 53443Epoch: 2024-12-31T12:26Z
Definitive object data (Epoch: 2024-12-31T12:26:06.913Z)
| Latitude | -48.3003° |
| Longitude | 107.96556° |
| Altitude | 58,878.092 km |
| Speed | 2.928 km/s |
| True Right ascension | 02h 19m 40s |
| True Declination | -48° 16' 54" |
| Sunlit | Object was in daylight at TLE epoch |
Visualization TLE readout
| Latitude | 48.37101° |
| Longitude | -54.83632° |
| Altitude | 144,552.444 km |
| Speed | 1.28 km/s |
| Apparent Right ascension | 15h 17m 24s |
| Apparent Declination | 47° 07' 56" |
| Sunlit | Object is in daylight |
Visualization observer readout
| Local Sidereal Time | 21:53:09 |
| Azimuth | 313.149° NW |
| Elevation | 22.906° |
| Doppler factor | 1 |
Orbital elements
| Apogee altitude | 147,631.954 km |
| Perigee altitude | 58,389.375 km |
| Semi-major axis | 109,388.802 km |
| Eccentricity | 0.4079146 |
| Inclination | 48.6004° |
| RAAN | 133.9677° |
| Arg. of periapsis | 262.2032° |
| True anomaly | 0.99538° |
| Mean anomaly | 0.3822° |
| Eccentric anomaly | 0.64551° |
| Mean motion | 0.05999 °/min |
| BSTAR | Unknown |
| Orbital period | 6000.93 mins |
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Other satellites on launch #40 in the year 1964 (1964-07-17 UTC)
| OPS 3662 (VELA 3), 836 |
| OPS 3674 (VELA 4), 837 |
| ERS 13, 838 (Decayed) |
OPS 3674 (VELA 4) 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. |
|---|---|---|---|---|---|---|---|
| 115 mins | 2025-01-02 22:02:27.993Z | 313.146° NW | 2025-01-02 22:02:27.993Z | 313.146° NW | 21.267° | 2025-01-02 23:57:27.993Z | 323.501° NNW |
| 701 mins | 2025-01-03 10:21:27.993Z | 46.549° ENE | 2025-01-03 18:56:27.993Z | 170.263° S | 44.383° | 2025-01-03 22:02:27.993Z | 251.425° W |
Authenticating...
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