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Space observatory
Hakucho (also known as CORSA-b before launch; CORSA stands for Cosmic Radiation Satellite ) was Japan 's first X-ray astronomy satellite , developed by the Institute of Space and Aeronautical Science (then a division of the University of Tokyo ). It was launched from the Kagoshima Space Center by the ISAS M-3C rocket on the M-3C-4 mission on February 21, 1979 [ 1] [ 2]
Hakucho was a replacement for the Cosmic Radiation Satellite (CORSA) satellite which failed to launch due to rocket failure on February 4, 1976.[ 3]
Discovery of soft X-ray transient Cen X-4 and Aql X-1
Discovery of many burst sources
Long-term monitoring of X-ray pulsar (e.g. Vela X-1)
Discovery of 2 Hz variability in the Rapid Burster later named Quasi Period Oscillation.
Operating
Planned Proposed Retired Hibernating (Mission completed) Lost/Failed Cancelled Related
Italics indicates projects in development.Symbol † indicates failed projects.
Strikethrough lines indicate cancelled projects.
National space agencies Joint development partners
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline . Uncatalogued launch failures are listed in italics . Payloads deployed from other spacecraft are denoted in (brackets).
