R Crucis

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R Crucis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Crux
Right ascension 12h 23m 37.68922s[1]
Declination −61° 37′ 44.8546″[1]
Spectral typeF6-G2Ib-II[2]
Other designations
CD−60° 4138, HD 107805, HIP 60455, SAO 251878[1]

R Crucis is a star in the constellation Crux. A Cepheid variable, its apparent magnitude ranges from 6.4 to 7.23 over 5.82575 days.[2] It is a yellow-white supergiant that pulsates between spectral types F6Ib-II and G2Ib-II.[2] The radius is 44.6 times that of the Sun.[3]


  1. ^ a b c "V* R Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 12 March 2014. 
  2. ^ a b c Watson, Christopher (4 January 2010). "R Crucis". AAVSO Website. American Association of Variable Star Observers. Retrieved 12 March 2014. 
  3. ^ Moskalik, P.; Gorynya, N. A. (2005). "Mean Angular Diameters and Angular Diameter Amplitudes of Bright Cepheids". Acta Astronomica. 55: 247. arXiv:astro-ph/0507076Freely accessible. Bibcode:2005AcA....55..247M.