13 Cancri

Star in the constellation Cancer Psi Cancriψ Cancri Cancer constellation map.svg center 280 right Red circle.svg 10 13 Cancri 694 288 Location of 13 Cancri (circled) J2000.0 Cancer 08 10 13.107 +25 50 40.13 +6.41 red giant branch K3 III 1.4200.015 4.960.23 −14.654 −30.976 3.3894 0.0255 −0.56 4.900.04 0.11 34.10.2 4,5225 486.06.5 1.8200.006 ψ1 Cancri 13 Cnc 67690 +26°1728 40007 79991 11082 08102+2551 J08102+2551A 13+Cnc 13 Cancri is a star in the zodiacal constellation of Cancer. Its name is a Flamsteed designation, abbreviated 13 Cnc; it has the Bayer designation ψ1 Cancri, although this is rarely used. This is one of the few Bayer or Flamsteed designated stars that are not listed in the Bright Star Catalogue. It is near the lower limit of stellar brightness that is still visible to the naked eye, having an apparent visual magnitude of +6.41. Based on a parallax measurements, it is located at a distance of 962 ly pc out on from the Earth. The star is drifting further away with a line of sight velocity of 5 km/s. In 1986, O. J. Eggen included it as a probable member of the Hyades Stream of co-moving stars. This is an aging K-type giant star with a stellar classification of K3 III, having exhausted the supply of hydrogen at its core and evolved away from the main sequence. Stellar models of this star indicate it has an estimated 4.9 times the mass of the Sun and has expanded to 34 times the Sun's radius. It is radiating 486 times the luminosity of the Sun from its photosphere at an effective temperature of 4,522 K. References 682665402225188864 2004yCat.4027....0K VizieR Online Data Catalog: HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index (Kostjuk, 2002) VizieR On-line Data Catalog: IV/27A. Originally Published in: Institute of Astronomy of Russian Academy of Sciences (2002) 4027 Kostjuk N. D. 2004 1 Adams Walter S. Joy Alfred H. Humason Milton L. Brayton Ada Margaret The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars Astrophysical Journal 81 187 1935 1935ApJ....81..187A 10.1086/143628 free 682665402225188864 2000A&A...355L..27H The Tycho-2 catalogue of the 2.5 million brightest stars Astronomy and Astrophysics 355 L27 1 Høg E. Fabricius C. Makarov V. V. Urban S. Corbin T. Wycoff G. Bastian U. Schwekendiek P. Wicenec A. 2000 1990BICDS..38...13B Flamsteed stars not contained in the Yale "Catalogue of Bright Stars" Bulletin d'Information du Centre de Données Stellaires 38 13 Bidelman W. P. 1990 1987JHA....18..209W Flamsteed's Missing Stars Journal for the History of Astronomy 18 3 209–223 Wagman M. 1987 10.1177/002182868701800305 118445625 40007 Hyades and Sirius supercluster members brighter than magnitude (V) 7.1. II. Right ascension six to twelve hours Eggen O. J. Publications of the Astronomical Society of the Pacific 98 423–441 April 1986 10.1086/131772 1986PASP...98..423E Category:K3III stars Category:Hyades Stream Category:Cancer (constellation) Cancri, Psi1 BD+26 1728 Cancri, 13 067690 040007