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13 Cancri

Star in the constellation Cancer

Star in the constellation Cancer

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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 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

References

  1. {{cite DR3. 682665402225188864
  2. Kostjuk, N. D.. (2004). "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).
  3. (1935). "The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars". Astrophysical Journal.
  4. {{cite DR2. 682665402225188864
  5. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics.
  6. Bidelman, W. P.. (1990). "Flamsteed stars not contained in the Yale "Catalogue of Bright Stars"". Bulletin d'Information du Centre de Données Stellaires.
  7. Wagman, M.. (1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy.
  8. {{Cite XHIP. 40007
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k-type-giants hyades-stream cancer-(constellation) bayer-objects durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects
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