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{{Starbox begin
| name = υ Geminorum
}}{{Starbox observe
| epoch = J2000.0
| equinox = J2000.0 (ICRS)
| constell = Gemini
| ra = {{RA|07|35|55.34970}}
| dec = {{DEC|+26|53|44.6751}}
| appmag_v = 4.04[3] {{nowrap|(4.04 - 4.08[4])}}
}}{{Starbox character
| class = M0 III[5]
| b-v = +1.54[3]
| u-b = +1.96[3]
| r-i =
| variable = suspected[4]
}}{{Starbox astrometry
| radial_v = {{Val|−21.61|0.19}}[9]
| prop_mo_ra = −34.12
| prop_mo_dec = -106.96
| parallax = 12.04
| p_error = 0.68
| parallax_footnote =
| absmag_v = −0.53[13]
}}{{Starbox detail
| mass = 1.52[14]
| radius = 44[9]
| luminosity = 417[9]
| temperature = {{Val|3926|16|fmt=commas}}[9]
| gravity = 1.0[9]
| metal_fe = 0.17[14]
| rotational_velocity = 5.9[9]
| rotation =
| age_gyr = 3.53[14]
}}{{Starbox catalog
| names = υ Gem, 69 Geminorum, BD+27° 1424, FK5 1196, HD 60522, HIP 36962, HR 2905, SAO 79533.[22]
}}{{Starbox reference
| Simbad = ups+Gem
}}{{starbox end}}Upsilon Geminorum, Latinized from υ Geminorum, is a star in the constellation Gemini. It has an apparent visual magnitude of 4.04,[3] which is bright enough to be seen with the naked eye. Based upon an annual parallax shift of 12.04 mas,[ it is around 270 light years from the Sun. There is a visual companion: a magnitude 13.20 star located at an angular separation of 55.20″ along a position angle of 40°, as of 2008.[25]]This is a evolved red giant star with a stellar classification of M0 III.[5] It is estimated to have 1.52[14] times the mass of the Sun, but has expanded to 44[9] times the Sun's radius. The star is spinning with a projected rotational velocity of 5.9 km/s[9] and is about 3.53[14] billion years old. Upsilon Geminorum is radiating 417 times the solar luminosity from its outer atmosphere at an effective temperature of 3926 K.[9] Based upon the motion of this star through space, Upsilon Geminorum is a member of the Wolf 630 moving group. This is a set of stars centered on Wolf 630 that are moving nearly in parallel and have an age of around {{Val|2.7|0.5}} billion years. They may be former members of a dissolved open cluster.[32] References1. ^1 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
2. ^1 {{citation | display-authors=1 | last1=Mason | first1=B. D. | last2=Wycoff | first2=G. L. | last3=Hartkopf | first3=W. I. | last4=Douglass | first4=G. G. | last5=Worley | first5=C. E. | title=The Washington Visual Double Star Catalog | year=2014 | bibcode=2001AJ....122.3466M | doi = 10.1086/323920 | postscript=. | volume=122 | journal=The Astronomical Journal | pages=3466–3471}}
3. ^1 {{citation | title=Spectroscopic Abundances and Membership in the Wolf 630 Moving Group | last1=Bubar | first1=Eric J. | last2=King | first2=Jeremy R. | journal=The Astronomical Journal | postscript=. | volume=140 | issue=2 | pages=293–318 | date=August 2010 | doi=10.1088/0004-6256/140/2/293 | bibcode=2010AJ....140..293B |arxiv = 1005.1205 }}
4. ^1 2 3 4 5 {{citation | title=Abundances in the Local Region. I. G and K Giants | last1=Luck | first1=R. Earle | journal=The Astronomical Journal | volume=150 | issue=3 | id=88 | pages=23 | date=September 2015 | doi=10.1088/0004-6256/150/3/88 | bibcode=2015AJ....150...88L | arxiv=1507.01466 | postscript=. }}
5. ^1 2 {{citation | last1=Morgan | first1=W. W. | last2=Keenan | first2=P. C. | title=Spectral Classification | journal=Annual Review of Astronomy and Astrophysics | volume=11 | page=29 | year=1973 | postscript=. | doi=10.1146/annurev.aa.11.090173.000333 | bibcode=1973ARA&A..11...29M }}
6. ^1 2 3 4 5 6 7 8 9 {{citation | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey | title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity | journal=The Astronomical Journal | postscript=. | display-authors=1 | volume=135 | issue=1 | pages=209–231 | date=January 2008 | doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M }}
7. ^1 2 3 4 {{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV data | year=1986 | publisher=SIMBAD | bibcode=1986EgUBV........0M | postscript=. }}
8. ^1 {{cite simbad | title=ups Gem | accessdate=2016-12-08 | postscript=. }}
9. ^1 2 {{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S|volume=1|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}
[1][2][3][4][5][6][7][8][9]
}}External links
| first1=James B. | last1=Kaler | date=March 2, 2012
| title=Upsilon Geminorum | work=Stars | publisher=University of Illinois
| url=http://stars.astro.illinois.edu/sow/upsgem.html
| accessdate=2016-12-08 | postscript=. }}{{Stars of Gemini|state=collapsed}} 9 : M-type giants|Gemini (constellation)|Bayer objects|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects|Suspected variables |