Astronomy:13 Cancri

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Short description: Star in the constellation Cancer
13 Cancri
Cancer constellation map.svg
Red circle.svg
Location of 13 Cancri (circled)
Observation data
Equinox J2000.0]] (ICRS)
Constellation Cancer
Right ascension  08h 10m 13.107s[1]
Declination +25° 50′ 40.13″[1]
Apparent magnitude (V) +6.41[2]
Characteristics
Evolutionary stage giant
Spectral type K3 III[3]
Astrometry
Radial velocity (Rv)4.96[1] km/s
Proper motion (μ) RA: −14.708[1] mas/yr
Dec.: −31.065[1] mas/yr
Parallax (π)3.3713 ± 0.0435 mas
Distance970 ± 10 ly
(297 ± 4 pc)
Absolute magnitude (MV)-0.56[4]
Details
Radius36[1] R
Luminosity387[1] L
Temperature4,266[1] K
Other designations
13 Cancri, HD 67690, BD+26°1728, HIP 40007, SAO 79991, GC 11082, CCDM 08102+2551
Database references
SIMBADdata

13 Cancri (abbreviated to 13 Cnc) is a K-type giant star in the constellation Cancer. It has an apparent magnitude of +6.41 and is approximately 970 light years from Earth.

Its designation is unusual as it is one of a very few stars which have a Bayer designation and are not in the Bright Star Catalog,[5] although the designation ψ1 Cancri is rarely used.[6] It is one of the few stars with a Flamsteed designation that are not listed in the Bright Star Catalogue.[7][8]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. Bibcode2000A&A...355L..27H. 
  3. Adams, Walter S.; Joy, Alfred H.; Humason, Milton L.; Brayton, Ada Margaret (1935). "The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars". Astrophysical Journal 81: 187. doi:10.1086/143628. Bibcode1935ApJ....81..187A. 
  4. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode2012AstL...38..331A. 
  5. Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H 5050. Bibcode1995yCat.5050....0H. 
  6. 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) 4027. Bibcode2004yCat.4027....0K. 
  7. Bidelman, W. P. (1990). "Flamsteed stars not contained in the Yale "Catalogue of Bright Stars"". Bulletin d'Information du Centre de Données Stellaires 38: 13. Bibcode1990BICDS..38...13B. 
  8. Wagman, M. (1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy 18 (3): 209–223. doi:10.1177/002182868701800305. Bibcode1987JHA....18..209W.