ASCA (ASTRO-D), also known as Asuka, is an astronomy and X-Ray satellite operated by ISASS. Launched on February 20, 1993, from KSCUT Launch Pad M1 using the Mu-3S-II launch vehicle, ASCA has a length of 4 meters, a diameter of 1.2 meters, and a span of 4 meters. The satellite has a dry mass of 420 kg and was launched with the same mass. Its power system includes two deployable fixed solar arrays and batteries. ASCA's configuration is described as step cylindrical with two panels. It does not have additional information on its lifetime or major events listed.