Kappa Cancri

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κ Cancri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension 09h07m44.8s
Declination +10°40′05″
Apparent magnitude (V) +5.23
Distance 484 ± 65 ly
(148 ± 20 pc)
Spectral type B8IIIpMn
Other designations
76 Cancri, HR 3623, HD 78316, BD+11°1984, FK5 1238, HIP 44798, SAO 98378, GC 12596

Kappa Cancri (κ Cnc, κ Cancri) is a star in the constellation Cancer.

κ Cancri is a blue-white B-type giant with a mean apparent magnitude of +5.23. It is approximately 484 light years from Earth. It is classified as an Alpha2 Canum Venaticorum type variable star and its brightness varies from magnitude +5.22 to +5.27 with a period of 5 days.

This is a spectroscopic binary star system with an orbital period of 6.39 days an eccentricity of 0.14. The primary component has 4.5 times the mass of the Sun, 5 times the Sun's radius, and an effective temperature of 13,200 K. The secondary is a smaller star with 2.1 times the mass and 2.4 times the radius of the Sun, having an effective temperature of 8,500 K.[1]


  1. ^ Ryabchikova, T. (April 1998), "Abundance analysis of SB2 binary stars with HgMn primaries", Contributions of the Astronomical Observatory Skalnate Pleso, 27 (3): 319–323, arXiv:astro-ph/9805063Freely accessible, Bibcode:1998CoSka..27..319R