6 Canis Minoris

6 Canis Minoris
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Canis Minor
Right ascension	07h 29m 47.78172s[1]
Declination	+12° 00′ 23.6347″[1]
Apparent magnitude (V)	+4.55[2]
Characteristics
Evolutionary stage	giant
Spectral type	K1 III[3]
B−V color index	1.276±0.001[2]
Astrometry
Radial velocity (Rv)	−16.31±0.13[4] km/s
Proper motion (μ)	RA: −0.57[1] mas/yr ; Dec.: −18.85[1] mas/yr
Parallax (π)	5.70 ± 0.21 mas[1]
Distance	570 ± 20 ly ; (175 ± 6 pc)
Absolute magnitude (MV)	−1.67[2]
Details
Mass	4.0[5] M☉
Radius	44[6] R☉
Luminosity	761.44[2] L☉
Temperature	4,370[5] K
Metallicity [Fe/H]	0.02[5] dex
Rotational velocity (v sin i)	1.7[7] km/s
Other designations
	6 CMi, BD+12°1567, FK5 1193, GC 10024, HD 59294, HIP 36425, HR 2864, SAO 96952[8]
Database references
SIMBAD	data

6 Canis Minoris is a star in the equatorial constellation of Canis Minor, located around 570 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of +4.55.[2] This object is moving closer to the Earth with a heliocentric radial velocity of −16.3 km/s.[4] Kinematically, it is a member of an outlying group belonging to the Ursa Major flow of the Sirius supercluster.[9]

This is an evolved giant star with a stellar classification of K1 III.[3] It has a mild barium anomaly,[10] which may indicate this is a binary star system with a white dwarf companion.[11] The interferometry-measured angular diameter of the visible component is about 2.31±0.03 mas,[12] which, at its estimated distance, equates to a physical radius of about 44 times the radius of the Sun.[6] This star has four[5] times the mass of the Sun and is radiating 761[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,370 K.[5]

References

van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
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.
Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
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.
Gondoin, P. (December 1999), "Evolution of X-ray activity and rotation on G-K giants", Astronomy and Astrophysics, 352: 217–227, Bibcode:1999A&A...352..217G.
Lang, Kenneth R. (2006), Astrophysical formulae, Astronomy and astrophysics library, vol. 1 (3rd ed.), Birkhäuser, ISBN 3-540-29692-1. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(10^{-3}\cdot 175.4\cdot 2.31)\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 87.2\cdot R_{\bigodot }\end{aligned}}$
De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv:astro-ph/0010273, Bibcode:2000A&A...363..239D.
"6 CMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-02.
Chupina, N. V.; et al. (June 2006), "Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars", Astronomy and Astrophysics, 451 (3): 909–916, Bibcode:2006A&A...451..909C, doi:10.1051/0004-6361:20054009.
Escorza, A.; et al. (December 2017), "Hertzsprung-Russell diagram and mass distribution of barium stars", Astronomy & Astrophysics, 608: 13, arXiv:1710.02029, Bibcode:2017A&A...608A.100E, doi:10.1051/0004-6361/201731832, S2CID 119428276, A100.
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, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
Richichi, A.; et al. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039

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[vanLeeuwen2007-1] van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.

[Anderson2012-2] 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.

[Keenan1989-3] Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.

[GaiaDR2-4] 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.

[Gondoin1999-5] Gondoin, P. (December 1999), "Evolution of X-ray activity and rotation on G-K giants", Astronomy and Astrophysics, 352: 217–227, Bibcode:1999A&A...352..217G.

[lang2006-6] Lang, Kenneth R. (2006), Astrophysical formulae, Astronomy and astrophysics library, vol. 1 (3rd ed.), Birkhäuser, ISBN 3-540-29692-1. The radius (R_*) is given by:
${\begin{aligned}2\cdot R_{*}&={\frac {(10^{-3}\cdot 175.4\cdot 2.31)\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 87.2\cdot R_{\bigodot }\end{aligned}}$

[DeMedeiros2000-7] De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv:astro-ph/0010273, Bibcode:2000A&A...363..239D.

[Simbad-8] "6 CMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-02.

[Chupina2006-9] Chupina, N. V.; et al. (June 2006), "Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars", Astronomy and Astrophysics, 451 (3): 909–916, Bibcode:2006A&A...451..909C, doi:10.1051/0004-6361:20054009.

[Escorza2017-10] Escorza, A.; et al. (December 2017), "Hertzsprung-Russell diagram and mass distribution of barium stars", Astronomy & Astrophysics, 608: 13, arXiv:1710.02029, Bibcode:2017A&A...608A.100E, doi:10.1051/0004-6361/201731832, S2CID 119428276, A100.

[Eggleton2008-11] 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, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

[Richichi2005-12] Richichi, A.; et al. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039