Tenma

Tenma, known as Astro-B before launch, was the Japan's second X-ray astronomy satellite, developed by Institute of Space and Astronautical Science. It was launched on February 20, 1983 with M-3S-3 rocket as vehicle.

Battery failure in July 1984 caused the operation to be limited, and continuing problems lead to the termination of X-ray observation in 1985. It reentered the atmosphere on January 19, 1989.

Highlights

*Discovery of the iron helium-like emission from the galactic ridge
*Iron line discovery and/or study in many LMXRB, HMXRB and AGN
*Discovery of an absorption line at 4 keV in the X1636-536 Burst spectra

External links

* [http://www.isas.jaxa.jp/e/enterp/missions/complate/tenma.shtml Tenma at ISAS]
* [http://heasarc.gsfc.nasa.gov/docs/tenma/tenma.html Tenma at NASA]