R Cygni

R Cygni
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cygnus
Right ascension 19h 36m 49.381s [1]
Declination +50° 11′ 59.46″ [1]

R Cygni is a variable star of the Mira type in the constellation Cygnus. It has a maximum magnitude of 6.1 and a minimum magnitude 14.4; its period of 426 days. It is a red giant ranging between spectral types S2.5,9e-S6,9e(Tc).[2]

References

  1. ↑ 1.0 1.1 "V* R Cygni -- S Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 21 January 2014.
  2. ↑ BSJ (4 January 2010). "R Cygni". AAVSO Website. American Association of Variable Star Observers. Retrieved 21 January 2014.