|Launch mass||225 kilograms (496 lb)|
|Start of mission|
|Launch date||April 28, 1967, 10:01UTC|
|Launch site||Cape Canaveral LC-41|
|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)|
|Period||6,690.8 minutes (111.513 h)|
Vela 4A (also known Vela 7 and OPS 6638) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ORS 4, OV5 1 and OV5 3.
The ship remains in orbit around Earth.