H1504+65
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ursa Minor |
| Right ascension | 15h 02m 09.62s |
| Declination | +66° 12′ 18.6″ |
| Apparent magnitude (V) | 15.9 |
| Characteristics | |
| Astrometry | |
| Details | |
| Temperature | 200,000 K |
| Other designations | |
|
WD 1501+663
|
|
| Database references | |
| SIMBAD | data |
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.
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