Compton Gamma Ray Observatory
Orbiter
The Compton Gamma Ray Observatory was a space observatory detecting photons with energies from 20 keV to 30 GeV, in Earth orbit from 1991 to 2000. The observatory featured four main telescopes in one spacecraft, covering X-rays and gamma rays,... Wikipedia
Launch date: April 5, 1991 at 9:22 AM EST
Cost: 617 million USD (2000)
Manufacturers: Northrop Grumman Corporation and TRW Inc.
Launch site: Kennedy Space Center Launch Complex 39
Perigee altitude: 362 kilometres (225 mi)
Collecting area: Varied by instrument
Decay date: 4 June 2000, 23:29:55 UTC