Vela 4A
(Redirected fromOPS 6638)
 | |
| Operator | USAF |
|---|---|
| COSPAR ID | 1967-040A[1] |
| SATCATno. | 2765[2] |
| Spacecraft properties | |
| Manufacturer | TRW |
| Launch mass | 225 kilograms (496 lb) |
| Power | 120 W |
| Start of mission | |
| Launch date | April 28, 1967, 10:01UTC |
| Rocket | TitanIII-C |
| Launch site | Cape CanaveralLC-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 knownVela 7andOPS 6638[3]) was an Americanreconnaissancesatelliteto detect explosions and nuclear tests on land and in space. It was released together withVela 4B,ERS 18,OV5 1andOV5 3.[4]
The ship remains in orbit aroundEarth.
Instruments
[edit]- 2 optical bhangmeters observingEarth
- 12 externalX-raydetectors
- 18 internalneutronandgamma-raydetectors
See also
[edit]References
[edit]- ^NASA Goddard Space Flight Center."Vela 4A".Retrieved28 September2019.
This article incorporates text from this source, which is in thepublic domain.
- ^Ford, Dominic."OPS 63".In-The-Sky.org.Retrieved28 September2019.
- ^Antonín Vítek."1967-040A - Vela 7".Space 40.Retrieved28 September2019.
- ^Krebs, Gunter."Vela 7, 8, 9, 10, 11, 12 (advanced Vela)".Gunter's Space Page.Retrieved28 September2019.
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