Magnitude 15.9 Apparent magnitude (V) 15.9 | Constellation Ursa Minor People also search for Theta Ursae Minoris | |
H1504+65 is an enigmatic peculiar star in the constellation Ursa Minor. With a surface temperature of 200,000 K and an atmosphere composed of carbon, oxygen and 2% neon, it is the hottest white dwarf ever discovered. It is thought to be the stellar core of a post AGB star, though its composition is unexplainable by current models of stellar evolution.
References
H1504+65 Wikipedia(Text) CC BY-SA