_(cropped).jpg) Vela 1B | |||||||||
| Operator | USAF | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| COSPAR ID | 1963-039C | ||||||||
| SATCAT no. | 00692 | ||||||||
| 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[1] | ||||||||
| Regime | Highly Elliptical | ||||||||
| Semi-major axis | 115,746.0 kilometres (71,921.2 mi) | ||||||||
| Perigee altitude | 42,766.0 kilometres (26,573.6 mi) | ||||||||
| Apogee altitude | 175,984.2 kilometres (109,351.5 mi) | ||||||||
| Inclination | 28.7° | ||||||||
| Period | 6,531.6 minutes | ||||||||
| Epoch | June 3, 2018 | ||||||||
| |||||||||
Vela 1B was a military satellite developed to detect nuclear detonations to monitor compliance with the 1963 Partial Test Ban Treaty by the Soviet Union.