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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.

For other stars with this Bayer designation, see ψ Cancri.
13 Cancri
Location of 13 Cancri (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
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

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. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. 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.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&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. Bibcode:1935ApJ....81..187A. doi:10.1086/143628.
  4. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  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. Bibcode:1995yCat.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. Bibcode:2004yCat.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. Bibcode:1990BICDS..38...13B.
  8. Wagman, M. (1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy. 18 (3): 209–223. Bibcode:1987JHA....18..209W. doi:10.1177/002182868701800305. S2CID 118445625.


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