Feige 55

Last updated
Feige 55
Observation data
Epoch J2000       Equinox J2000
Constellation Ursa Major
Right ascension 12h 04m 38.5357s [1]
Declination +60° 32′ 08.0865″ [1]
Apparent magnitude  (V)+13.45
Characteristics
Spectral type DAO+M5.5V
Astrometry
Proper motion (μ)RA: −54.744±0.065 [1] mas/yr
Dec.: −34.855±0.061 [1] mas/yr
Parallax (π)5.0141±0.0419  mas [1]
Distance 650 ± 5  ly
(199 ± 2  pc)
Other designations
Gaia DR2 1582231699483080192, WD 1202+608, 2MASS J12043856+6032082 [2]
Database references
SIMBAD data

Feige 55 is a hot white dwarf approximately 650 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. [3]

References

  1. 1 2 3 4 5 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. ↑ "Feige 55". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-10-12.
  3. ↑ Holberg; et al. (1995). "The Binary Double-degenerate Nature of the Bright DAO White Dwarf Feige 55". The Astrophysical Journal Letters . 452 (2): 133–137. Bibcode:1995ApJ...452L.133H. doi: 10.1086/309735 .


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