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ABRIXAS in orbit.
Mission type X-ray astronomy
Operator DLR
COSPAR ID 1999-022A
SATCAT № 25721
Spacecraft properties
Launch mass 550.0 kilograms (1,212.5 lb)
Start of mission
Launch date 28 April 1999, 20:30 (1999-04-28T20:30Z) UTC
Rocket Kosmos-3M
Launch site Kapustin Yar 107
End of mission
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Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Semi-major axis 6,869.9 kilometers (4,268.8 mi)
Eccentricity 0.00352
Perigee 549 km (341 mi)
Apogee 598 km (372 mi)
Inclination 48.0 degrees
Period 96.00 minutes

A Broadband Imaging X-ray All-sky Survey, or ABRIXAS was a space-based German X-ray telescope. It was launched on 28 April 1999 in a Cosmos launch vehicle from Kapustin Yar, Russia, into Earth orbit. The orbit had a periapsis of 549.0 kilometres (341.1 mi), an apoapsis of 598.0 kilometres (371.6 mi), an inclination of 48.0° and an eccentricity of 0.00352, giving it a period of 96 minutes.[1][2]

The telescope's battery was accidentally overcharged and destroyed three days after the mission started. When attempts to communicate with the satellite when its solar panels were illuminated by sunlight failed, the $20 million project was abandoned.[3]


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