Feige 55
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ursa Major |
Right ascension | 12h 04m 38.91s |
Declination | +60° 32′ 09.3″ |
Apparent magnitude (V) | +13.45 |
Characteristics | |
Spectral type | DAO+M5.5V |
Astrometry | |
Distance | 665 ly (204±24 pc) |
Details | |
Mass | 0.486/0.3 M☉ |
Radius | 0.0345/0.33? R☉ |
Luminosity | 10.7/0.0079 L☉ |
Temperature | 56,300/3000? K |
Other designations | |
Feige 55 | |
Database references | |
SIMBAD | data |
Feige 55 is a hot white dwarf approximately 665 light-years away from the Sun in the constellation of Ursa Major. The star is likely a post-AGB star with relatively high luminosity for a standard white dwarf. It is also in a close binary system with orbital period of 1.4933 days.[1]
References
- ↑ Holberg; et al. (1995). "The Binary Double-degenerate Nature of the Bright DAO White Dwarf Feige 55". The Astrophysical Journal Letters. 452: 133–137. Bibcode:1995ApJ...452L.133H. doi:10.1086/309735.
Coordinates: 12h 04m 38.91s, +60° 32′ 09.3″
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