Sigma Capricorni

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Sigma Capricorni
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Capricornus
Right ascension 20h 19m 23.60425s[1]
Declination −19° 07′ 06.7233″[1]
Apparent magnitude (V) +5.31[2]
Characteristics
Spectral type K2 III[3]
U−B color index +1.56[2]
B−V color index +1.43[2]
Astrometry
Proper motion (μ) RA: +8.07[1] mas/yr
Dec.: −11.31[1] mas/yr
Parallax (π) 2.91 ± 0.28[1] mas
Distance 1,100 ± 100 ly
(340 ± 30 pc)
Details
Mass 6.3±0.7[4] M
Luminosity 1,561[5] L
Temperature 4,354[5] K
Age 60.5±17.2[4] Myr
Other designations
σ Cap, 7 Cap, BD−19° 5776, FK5 3625, HD 193150, HIP 100195, HR 7761, SAO 163445[6]
Database references
SIMBAD data

Sigma Capricorni (σ Cap, σ Capricorni) is a solitary[7] star in the southern constellation of Capricornus. It is an evolved, orange-hued K-type giant star with an apparent magnitude of +5.31.[2] Sigma Capricorni is located approximately 1,100 light years from Earth.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752Freely accessible, doi:10.1051/0004-6361:20078357. 
  2. ^ a b c d Fernie, J. D. (May 1983), "New UBVRI photometry for 900 supergiants", Astrophysical Journal Supplement Series, 52: 7–22, Bibcode:1983ApJS...52....7F, doi:10.1086/190856. 
  3. ^ Houk, N.; Smith-Moore, M. (1988), Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars, 4, Bibcode:1988MSS...C04....0H. 
  4. ^ a b Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, arXiv:1007.4883Freely accessible, doi:10.1111/j.1365-2966.2010.17434.x. 
  5. ^ a b McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427: 343, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x. 
  6. ^ "sig Cap -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2017-05-12. 
  7. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, arXiv:0806.2878Freely accessible, doi:10.1111/j.1365-2966.2008.13596.x.