HAKUCHO, which means "swan" or "cygnus" in Japanese, is the first Japanese X-ray astronomy satellite. HAKUCHO, formerly known as CORSA-b, was launched by the M-3C-4 rocket on February 21, 1979, at Kagoshima Space Center (KSC). It had observed the X-ray sources of space origin, including X-ray burst and soft X-ray nebulae until it rentered the earth's atmosphere on April 16, 1985.

HAKUCHO Bibliography

• HAKUCHO REPORT 1979 Feb. - 1980 Dec. (pdf file)
• HAKUCHO REPORT 1979 Feb. - 1985 Aug. (pdf file)