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- References
{{Starbox begin
| name = Omicron Columbae
}}{{Starbox observe
| epoch = J2000.0
| equinox = J2000.0 (ICRS)
| constell = Columba
| ra = {{RA|05|17|29.08929}}
| dec = {{DEC|−34|53|42.7444}}
| appmag_v = 4.81[3]
}}{{Starbox character
| class = K1 IV[4] or K1 III[3]
| b-v = +1.00[6]
| u-b = +0.80[6]
| r-i =
| variable =
}}{{Starbox astrometry
| radial_v = {{Val|21.10|0.09}}[8]
| prop_mo_ra = +92.67
| prop_mo_dec = −336.23
| parallax = 30.82
| p_error = 0.20
| parallax_footnote =
| absmag_v = {{Val|+2.17|0.04}}[12]
}}{{Starbox detail
| source = [8]
| mass = {{Val|1.57|0.07}}
| radius = {{Val|5.04|0.14}}
| luminosity = 15.5
| temperature = {{Val|4936|28|fmt=commas}}
| gravity = {{Val|3.19|0.03}}
| metal_fe = {{Val|−0.04|0.04}}
| rotational_velocity = 1.2[3]
| age_gyr = {{Val|2.17|0.28}}
}}{{Starbox catalog
| names = ο Col, CD−35° 2214, FK5 197, HD 34642, HIP 24659, HR 1743, SAO 195721.[15]
}}{{Starbox reference
| Simbad = omi+Col
}}{{starbox end}}Omicron Columbae is a star in the southern constellation Columba. It has an apparent visual magnitude of 4.81,[3] which is bright enough to be faintly visible to the naked eye. The distance to this star, as determined by an annual parallax shift of 30.82 mas,[ is 105.8 light years. The visual magnitude is reduced by an interstellar absorption factor of 0.06 due to intervening dust.[8]]Depending on the source, this star has been given a stellar classification of K1 III[3] or K1 IV,[4] suggesting that it is a K-type star currently in the subgiant or giant stage of its evolution. It has 1.57 times the Sun's mass and has expanded to more than five times the radius of the Sun.[8] The star appears to be spinning slowly with a projected rotational velocity of 1.2 km/s,[3] and is around 2.2 billion years old. It is estimated to radiate 15.5 times the solar luminosity from its outer atmosphere at an effective temperature of 4,936 K.[8] Omicron Columbae is a high proper motion star that may share a common proper motion with the object WISE J051723.87−345121.8. The two have an angular separation of 159 arc seconds.[24] References1. ^1 {{citation | title=Characterization of High Proper Motion Objects from the Wide-field Infrared Survey Explorer | last1=Luhman | first1=K. L. | last2=Sheppard | first2=Scott S. | journal=The Astrophysical Journal | volume=787 | issue=2 | id=126 | pages=12 | date=June 2014 | doi=10.1088/0004-637X/787/2/126 | bibcode=2014ApJ...787..126L | arxiv=1404.6505 | postscript=. }}
2. ^1 2 {{citation | title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I | display-authors=1 | last1=Gray | first1=R. O. | last2=Corbally | first2=C. J. | last3=Garrison | first3=R. F. | last4=McFadden | first4=M. T. | last5=Robinson | first5=P. E. | journal=The Astronomical Journal | volume=126 | issue=4 | pages=2048 | year=2003 | bibcode=2003AJ....126.2048G | postscript=. | doi=10.1086/378365 | arxiv=astro-ph/0308182}}
3. ^1 2 3 4 5 {{citation | title=Stellar parameters and chemical abundances of 223 evolved stars with and without planets | last1=Jofré | first1=E. | last2=Petrucci | first2=R. | last3=Saffe | first3=C. | last4=Saker | first4=L. | last5=Artur de la Villarmois | first5=E. | last6=Chavero | first6=C. | last7=Gómez | first7=M. | last8=Mauas | first8=P. J. D. | journal=Astronomy & Astrophysics | display-authors=1 | volume=574 | pages=A50 | year=2015 | arxiv=1410.6422 | bibcode=2015A&A...574A..50J | doi=10.1051/0004-6361/201424474 | postscript=. }}
4. ^1 2 {{citation | title=Comparison Stars for Long Period Variables | display-authors=1 | last1=Cousins | first1=A. W. J. | last2=Lagerweij | first2=H. C. | last3=Shillington | first3=F. A. | journal=Monthly Notes of the Astronomical Society of Southern Africa | volume=28 | page=63 | year=1969 | bibcode=1969MNSSA..28...63C | postscript=. }}
5. ^1 2 3 4 5 6 {{citation | title=Precise radial velocity measurements of G and K giants. Multiple systems and variability trend along the Red Giant Branch | last1=Setiawan | first1=J. | last2=Pasquini | first2=L. | last3=da Silva | first3=L. | last4=Hatzes | first4=A. P. | last5=von der Lühe | first5=O. | last6=Girardi | first6=L. | last7=de Medeiros | first7=J. R. | last8=Guenther | first8=E. | journal=Astronomy and Astrophysics | volume=421 | pages=241–254 | date=July 2004 | doi=10.1051/0004-6361:20041042-1 | bibcode=2004A&A...421..241S | display-authors=1 | postscript=. }}
6. ^1 {{citation | display-authors=1 | last1=da Silva | first1=L. | last2=Girardi | first2=L. | last3=Pasquini | first3=L. | last4=Setiawan | first4=J. | last5=von der Lühe | first5=O. | last6=de Medeiros | first6=J. R. | last7=Hatzes | first7=A. | last8=Döllinger | first8=M. P. | last9=Weiss | first9=A. | title=Basic physical parameters of a selected sample of evolved stars | journal=Astronomy and Astrophysics | volume=458 | issue=2 | pages=609–623 | date=November 2006 | doi=10.1051/0004-6361:20065105 | bibcode=2006A&A...458..609D | arxiv=astro-ph/0608160 | postscript=. }}
7. ^1 {{citation | title=omi Col -- High proper-motion Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=omi+Col | accessdate=2017-01-02 | postscript=. }}
[1][2][3][4][5][6][7]
}}{{Stars of Columba|state=collapsed}} 7 : K-type giants|Columba (constellation)|Bayer objects|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |