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 53177
Epoch: 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 | 48.4658° |
Longitude | -151.36° |
Altitude | 143,973.61 km |
Speed | 1.288 km/s |
Apparent Right ascension | 14h 49m 22s |
Apparent Declination | 48° 22' 28" |
Sunlit | Object is in daylight |
Predictive observer data (real-time)
Local Sidereal Time | 18:02:37 |
Azimuth | 300.298° NW |
Elevation | 54.935° |
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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