| absmag_v = −0.32[10]
}}{{Starbox orbit
| reference = [11][12]
| period_unitless = 868.78 d
| axis_unitless = {{Val|9.02|0.52|u=mas}}
| eccentricity = 0.7
| inclination = {{Val|116.3|4.2}}
| periastron = 2419915.02 JD
| periarg = 117.1
| k1 = 10.6
}}{{Starbox detail
| component1 = δ Col A
| mass =
| radius =
| luminosity = 149.5[13]
| temperature = 5,136[10]
| gravity = 2.49[15]
| metal_fe = −0.04[15]
| rotational_velocity = {{Val|4.8|0.2}}[10]
| rotation =
| age_myr =
}}{{Starbox catalog
| names = δ Col, CD−33° 2927, HD 44762, HIP 30277, HR 2296, SAO 196735.[18]
}}{{Starbox reference
| Simbad = del+Col
}}{{starbox end}}Delta Columbae is a binary star system in the constellation Columba. It can be seen with the naked eye having an apparent visual magnitude of 3.85.[3] The distance to this system, based upon an annual parallax shift of 13.94 mas,[ is around 234 lightyears.]
Delta Columbae was a latter designation of 3 Canis Majoris, as the early astronomers Johann Bayer and John Flamsteed did not include the constellation Columba in their star charts.[21] It has the uncommon traditional name Ghusn al Zaitun, from the Arabic الغصن الزيتون al-ghuşn al-zaitūn "the olive branch".{{Citation needed|date=April 2009}} In early Arabian astronomy, this star, along with ζ CMa, λ CMa, γ Col, θ Col, κ Col, λ Col, μ Col and ξ Col, formed Al Ḳurūd (ألقرد - al-qird), the Apes.[22]
This is a single-lined spectroscopic binary system with an orbital period of 868.78 days and an eccentricity of 0.7.[11] It has a peculiar velocity of {{Val|30.2|3.9|u=km/s}}, making it a candidate runaway star system. The primary component is a G-type bright giant star with a stellar classification of G7 II.[4] It radiates around 149[13] time the solar luminosity from its outer atmosphere at an effective temperature of 5,136 K.[10]
References
1. ^1 2 {{cite journal | display-authors=1 | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. | title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars | journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–57 | date=2012 | bibcode=2012MNRAS.427..343M | arxiv=1208.2037 | doi=10.1111/j.1365-2966.2012.21873.x | postscript=. }}
2. ^1 2 {{citation | title=Parameters and Abundances in Luminous Stars | journal=The Astronomical Journal | postscript=. | last1=Luck | first1=R. Earle | volume=147 | issue=6 | pages=137 | year=2014 | doi=10.1088/0004-6256/147/6/137 | bibcode=2014AJ....147..137L}}
3. ^1 2 {{citation | display-authors=1 | last1=Tetzlaff | first1=N. | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M. | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | issue=1 | pages=190–200 | date=January 2011 | doi=10.1111/j.1365-2966.2010.17434.x | bibcode=2011MNRAS.410..190T |arxiv = 1007.4883 | postscript=. }}
4. ^1 2 {{citation | title=SB9: The ninth catalogue of spectroscopic binary orbits | journal=Astronomy & Astrophysics |display-authors=5 | last1=Pourbaix | first1=D. | last2=Tokovinin | first2=A. A. | last3=Batten | first3=A. H. | last4=Fekel | first4=F. C. | last5=Hartkopf | first5=W. I. | last6=Levato | first6=H. | last7=Morrell | first7=N. I. | last8=Torres | first8=G. | last9=Udry | first9=S. | volume=424 | issue=2 | pages=727–732 | date=2004 | doi=10.1051/0004-6361:20041213 | bibcode=2004A&A...424..727P | arxiv=astro-ph/0406573 | postscript=. }}
5. ^1 {{citation | title=Astrometric orbits of SB9 stars | last1=Jancart | first1=S. | last2=Jorissen | first2=A. | last3=Babusiaux | first3=C. | last4=Pourbaix | first4=D. | journal=Astronomy and Astrophysics | display-authors=1 | volume=442 | issue=1 | pages=365–380 | date=October 2005 | doi=10.1051/0004-6361:20053003 | bibcode=2005A&A...442..365J | postscript=. |arxiv = astro-ph/0507695 }}
6. ^1 2 3 4 {{citation | last1=Ammler-von Eiff | first1=M. | last2=Reiners | first2=A. | title=New measurements of rotation and differential rotation in A-F stars: Are there two populations of differentially rotating stars? | journal=Astronomy & Astrophysics | volume=542| page=A116 | year=2012 | bibcode=2012A&A...542A.116A | doi=10.1051/0004-6361/201118724 | arxiv=1204.2459 | postscript=. }}
7. ^1 2 3 4 {{citation | last=Johnson | first=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Commission Lunar and Planetary Laboratory | date=1999 | volume=4 | pages=99 | bibcode=1966CoLPL...4...99J | postscript=. }}
8. ^1 {{citation | last=Wagman | first=M. | title=Flamsteed's Missing Stars | journal=Journal for the History of Astronomy | volume=18 | issue=3 | pages=209–223 |date=August 1987 | bibcode=1987JHA....18..209W | postscript=. | doi=10.1177/002182868701800305}}
9. ^1 {{citation | last=Davis Jr. | first=G. A. | title=The Pronunciations, Derivations, and Meanings of a Selected List of Star Names | journal=Popular Astronomy | volume=18 | page=14 |date=October 1944 | bibcode=1944PA.....52....8D | postscript=. }}
10. ^1 {{citation | title=del Col -- Spectroscopic binary | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=del+Col | accessdate=2016-12-21 | postscript=. }}