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EXOSAT

EXOSAT was a completed ESA X-ray astronomy mission launched on 26 May 1983 into a highly eccentric Earth orbit. The observatory made 1,780 observations of energetic sources before its operations ended in 1986.

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Aliases
Exosat missionEuropean X-ray Observatory Satellite1983-051A
Name
EXOSAT
Status
completed

Details

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Description
EXOSAT was a completed ESA X-ray astronomy mission launched on 26 May 1983 into a highly eccentric Earth orbit. The observatory made 1,780 observations of energetic sources before its operations ended in 1986.
Destination
Highly eccentric Earth orbit (approximately 90.6-hour period; inclination 73°)
End Date
1986-04-09
Launch Site
Outcome
EXOSAT expanded high-energy astronomy through observations of X-ray binaries, pulsars, and other cosmic sources, including studies of quasi-periodic oscillations in low-mass X-ray binaries.
Start Date
1983-05-26
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Creation Time
August 1, 2026 at 13:46:36 UTC
Updated Time
August 1, 2026 at 13:46:36 UTC

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