Vela 4A
(Redirected from OPS 6638)
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| Operator | USAF |
|---|---|
| COSPAR ID | 1967-040A[1] |
| SATCAT no. | 2765[2] |
| Spacecraft properties | |
| Manufacturer | TRW |
| Launch mass | 225 kilograms (496 lb) |
| Power | 120 W |
| Start of mission | |
| Launch date | April 28, 1967, 10:01 UTC |
| Rocket | Titan III-C |
| Launch site | Cape Canaveral LC-41 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Highly Elliptical |
| Semi-major axis | 117,619 kilometres (73,085 mi) |
| Perigee altitude | 53,631.5 kilometres (33,325.1 mi) |
| Apogee altitude | 161,866.1 kilometres (100,578.9 mi) |
| Inclination | 19.9° |
| Period | 6,690.8 minutes (111.513 h) |
Vela 4A (also known Vela 7 and OPS 6638[3]) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ERS 18, OV5 1 and OV5 3.[4]
The ship remains in orbit around Earth.
Instruments
[edit]- 2 optical bhangmeters observing Earth
- 12 external X-ray detectors
- 18 internal neutron and gamma-ray detectors
See also
[edit]References
[edit]- ^ NASA Goddard Space Flight Center. "Vela 4A". Retrieved 28 September 2019.
This article incorporates text from this source, which is in the public domain.
- ^ Ford, Dominic. "OPS 63". In-The-Sky.org. Retrieved 28 September 2019.
- ^ Antonín Vítek. "1967-040A - Vela 7". Space 40. Retrieved 28 September 2019.
- ^ Krebs, Gunter. "Vela 7, 8, 9, 10, 11, 12 (advanced Vela)". Gunter's Space Page. Retrieved 28 September 2019.
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