X Cancri

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X Cancri
Cancer constellation map.svg
Red circle.svg
Location of X Cancri (circled)
Observation data
Epoch J2000.0[1]      Equinox J2000.0[1]
Constellation Cancer[1]
Right ascension  08h 55m 22.88131s[1]
Declination +17° 13′ 52.5894″[1]
Apparent magnitude (V) 5.69 - 6.94[2]
Spectral type C5,4(N3)[2]
Other designations
BD+17° 1973, HD 76221, HIP 43811, HR 3541

X Cancri is a semiregular variable star located in the constellation Cancer.[1] It varies between magnitudes 5.69 and 6.94 over 180 days.[2] Located around 1116 light-years distant, it shines with a luminosity approximately 4695 times that of the Sun and has a surface temperature of 3317 K.[3] It has a radius of 470 R.[4]


  1. ^ a b c d e "V* X Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 July 2014.
  2. ^ a b c Otero, Sebastian Alberto (30 June 2011). "X Cancri". AAVSO Website. American Association of Variable Star Observers. Retrieved 22 July 2014.
  3. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
  4. ^ Luttermoser, Donald G.; Brown, Alexander (1992). "A VLA 3.6 centimeter survey of N-type carbon stars". Astrophysical Journal. 384: 634. Bibcode:1992ApJ...384..634L. doi:10.1086/170905.