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Hakucho





Hakucho
The first Japanese X-ray astronomy satellite; it was named "swan" in Japanese because one of the most powerful cosmic X-ray sources is Cygnus X-1. As in the case of many other X-ray satellites deployed around this time, Hakucho was designed to study and monitor transient (quick-changing) phenomena, with special emphasis on X-ray bursts in the energy range 0.1–100 keV. It was known prior to launch as Corsa-B. Hakucho stopped operating in April 1985.


launch date Feb. 21, 1979
launch vehicle M-3S
launch site Kagoshima
orbit 543 × 566 km × 29.8°
mass 96 kg


Related entry

   • X-ray satellites


Related categories

   • JAPANESE SPACECRAFT
   • SATELLITES AND SPACE PROBES
   • JAPAN IN SPACE