出典:Wikipedia
出典:『Wikipedia』 (2011/03/18 14:21 UTC 版)
DM Lyrae (DM Lyr for short) is a dwarf nova in the constellation Lyra. This binary system is composed of a primary star of unknown type, and a white dwarf companion. It erupted in 1928 and 1996 and reached about magnitude 13. Due to its position, coverage of the star by major northern hemisphere observatories is difficult during the winter months and very difficult by major southern hemisphere observatories all year round; it is quite possible that several outbursts have been missed.