Vela 1A
Vela 1A (or Vela 1) was a military satellite developed to detect nuclear detonations to monitor compliance with the 1963 Partial Test Ban Treaty by the Soviet Union.
![]() Vela 1A  | |
| Operator | USAF | 
|---|---|
| COSPAR ID | 1963-039A | 
| SATCAT no. | 00674 | 
| Mission duration | 6 months (planned) | 
| Spacecraft properties | |
| Manufacturer | TRW | 
| Launch mass | 150 kilograms (330 lb) | 
| Power | 90 W | 
| Start of mission | |
| Launch date | October 17, 1963, 02:24 | 
| Rocket | Atlas-LV3 Agena-D | 
| Launch site | Cape Canaveral LC-13 | 
| Orbital parameters | |
| Reference system | Geocentric | 
| Regime | Highly Elliptical | 
| Perigee altitude | 101,081 kilometres (62,809 mi) | 
| Apogee altitude | 116,582 kilometres (72,441 mi) | 
| Inclination | 38.7° | 
| Period | 6,486.2 minutes | 
| Epoch | October 17, 1963 | 
Launch
    
Vela 1A was launched on October 17, 1963 from the Cape Canaveral Air Force Station, Florida, by an Atlas-Agena launch vehicle. Vela 1A was launched along with Vela 1B and with ERS 12.[1]
Mission
    
Vela 1A was a spin-stabilized 124-kg satellite comprising the first launch in a series of six Vela launches. Together with its twin Vela 1B, their objectives were to monitor nuclear weapons explosions in space and to study x-rays, gamma-rays, neutrons, and charged particles as the satellites passed through interplanetary space, the bow shock, the magnetosheath, and the magnetotail.[2]
See also
    
    
References
    
- Wade, Mark. "Vela". Astronautix. Archived from the original on December 28, 2016. Retrieved June 1, 2018.
 - NASA Goddard Space Flight Center. "Vela 1A". Retrieved June 1, 2018.
 
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