DY Persei

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DY Persei
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Perseus
Right ascension 02h 35m 17.132s [1]
Declination +56° 08′ 44.68″ [1]

DY Persei is a variable star in the Perseus constellation, being a prototype star to the very rare type of DY Persei variables, that pulsate like red variables, but also fade from sight like R Coronae Borealis variables.[2] DY Persei itself is a carbon star that is too dim to see through binoculars, with an apparent magnitude of 10.6.[1]


  1. ^ a b c SIMBAD, DY Persei (accessed 2 July 2014)
  2. ^ Alcock, C.; Allsman, R. A.; Alves, D. R.; Axelrod, T. S.; Becker, A.; Bennett, D. P.; Clayton, G. C.; Cook, K. H.; Dalal, N. (2001). "The MACHO Project LMC Variable Star Inventory. X. The R Coronae Borealis Stars". The Astrophysical Journal 554 (1): 298–315. arXiv:astro-ph/0102262. Bibcode:2001ApJ...554..298A. doi:10.1086/321369.  edit