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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OPS 3674 (VELA 4) details
| Identifier | |
| Orbit | HEO |
| Last TLE update | in 2 days |
| Origin | |
| Manufacturer | TRW |
| Mission status | Unknown |
| 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 |
| Radar Cross Section | Medium (>0.1 m² and <1 m²) |
Expand to show TLE details & history
TLE from in 2 days
0 OPS 3674 (VELA 4)
1 00837U 64040B 24254.07281688 .00000210 00000-0 00000-0 0 9992
2 00837 48.3537 135.9850 3763957 265.3055 0.3805 0.23999871 53177Epoch: 2024-09-10T01:44Z
Definitive object data (Epoch: 2024-09-10T01:44:51.378Z)
| Latitude | -48.30596° |
| Longitude | 23.99408° |
| Altitude | 61,802.961 km |
| Speed | 2.837 km/s |
| True Right ascension | 02h 39m 12s |
| True Declination | -48° 17' 17" |
| Sunlit | Object was in daylight at TLE epoch |
Predictive object data (real-time)
| Latitude | 45.84782° |
| Longitude | -173.77791° |
| Altitude | 142,350.41 km |
| Speed | 1.31 km/s |
| Apparent Right ascension | 13h 37m 54s |
| Apparent Declination | 45° 20' 16" |
| Sunlit | Object is in daylight |
Predictive observer data (real-time)
| Local Sidereal Time | 09:19:19 |
| Azimuth | 60.98° ENE |
| Elevation | 43.412° |
| Doppler factor | 1 |
Orbital elements
| Apogee | 144,169.22 km |
| Perigee | 61,830.431 km |
| Semi-major axis | 109,377.963 km |
| Eccentricity | 0.3763957 |
| Inclination | 48.3537° |
| RAAN | 135.985° |
| Arg. of periapsis | 265.3055° |
| True anomaly | 0.90647° |
| Mean anomaly | 0.3805° |
| Eccentric anomaly | 0.61016° |
| Mean motion | 0.06 °/min |
| BSTAR | Unknown |
| Period | 6000.04 mins |
No data available
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: 39.9160978°, -105.1181434
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. |
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