3 Andromedae
{{Short description|Star in the constellation Andromeda}}
{{distinguish|Andromeda III}}
{{Starbox begin}}
{{Starbox image
| image=
{{Location mark
|image=Cassiopeia constellation map.svg|alt=|float=center|width=260
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=3 Andromedae
|x=874|y=730
}}
|caption=Location of 3 Andromedae (circled)
}}
{{Starbox observe
| epoch = J2000
| constell = Andromeda
| dec = {{DEC|+50|03|07.5255}}{{Cite DR3|1985791121590368640}}
}}
{{Starbox character
| type = red clump
| u-b =
}}
{{Starbox astrometry
| radial_v = {{Val|−34.87|0.12}}
| prop_mo_dec = 167.716
| parallax = 17.2629
| p_error = 0.0918
}}
{{Starbox detail
| source =
| temperature = {{Val|4668|45|fmt=commas}}
}}
{{Starbox catalog
| names = {{odlist | F=3 And | BD=+49°4028 | HD=218031| HIP=113919 | HR=8780 | SAO=52649 | PPM=41448 | LTT=16772 }}
}}
{{Starbox reference
| Simbad = 3+And
}}
{{Starbox end}}
3 Andromedae, abbreviated 3 And, is a single star in the northern constellation of Andromeda. 3 Andromedae is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.64. The distance to this star, as determined from an annual parallax shift of {{Val|17.3|ul=mas}}, is 181 light years. It is moving closer to the Earth with a heliocentric radial velocity of −35 km/s, and has a relatively large proper motion, traversing the celestial sphere at {{Val|0.236|ul=arcsecond}}·yr−1.
This is an evolved giant star with a stellar classification of K0 IIIb, where the 'b' suffix indicated a lower luminosity giant. It is a red clump star, which means it is generating energy through helium fusion at its core. This star has an estimated 1.7 times the mass of the Sun ({{solar mass}}), and, at the age of 2.3 billion years, has expanded to 10 times the Sun's radius ({{solar radius}}). It is radiating 49 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,668 K.
References
{{Reflist|refs=
{{cite simbad | title=3 And | access-date=September 12, 2018 }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters | arxiv=1108.4971
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| s2cid=119257644 | postscript=. }}
| last1=Keenan | first1=Philip C. | last2=McNeil | first2=Raymond C.
| title=The Perkins catalog of revised MK types for the cooler stars
| journal=Astrophysical Journal Supplement Series
| volume=71 | pages=245 | year=1989 | postscript=.
| bibcode=1989ApJS...71..245K | doi=10.1086/191373 }}
| title=Determining Ages of APOGEE Giants with Known Distances
| journal=The Astrophysical Journal
| display-authors=1 | last1=Feuillet | first1=Diane K.
| last2=Bovy | first2=Jo | last3=Holtzman | first3=Jon
| last4=Girardi | first4=Léo | last5=MacDonald | first5=Nick
| last6=Majewski | first6=Steven R. | last7=Nidever | first7=David L.
| volume=817 | pages=40 | year=2016
| issue=1
| bibcode=2016ApJ...817...40F | doi=10.3847/0004-637X/817/1/40
| arxiv=1511.04088 | s2cid=118675933
| postscript=. | doi-access=free
}}
| title=Abundances in the Local Region. I. G and K Giants
| last1=Luck | first1=R. Earle
| journal=Astronomical Journal
| volume=150 | issue=3 | at=88 | year=2015
| arxiv=1507.01466 | bibcode=2015AJ....150...88L
| doi=10.1088/0004-6256/150/3/88 | s2cid=118505114 | postscript=. }}
| display-authors=1 | last1=Tautvaišienė | first1=G.
| last2=Edvardsson | first2=B. | last3=Puzeras | first3=E.
| last4=Barisevičius | first4=G. | last5=Ilyin | first5=I.
| title=C, N and O abundances in red clump stars of the Milky Way
| journal=Monthly Notices of the Royal Astronomical Society
| volume=409 | issue=3 | pages=1213–1219 | date=December 2010
| doi=10.1111/j.1365-2966.2010.17381.x | doi-access=free | bibcode=2010MNRAS.409.1213T
| postscript=. | arxiv=1007.4064 | s2cid=119182458 }}
| display-authors=1 | postscript=.
| 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
| volume=135 | issue=1 | pages=209–231 | date=January 2008
| doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | doi-access=free }}
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.
| title=A catalogue of multiplicity among bright stellar systems
| journal=Monthly Notices of the Royal Astronomical Society
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | postscript=.
| bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}
| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
| last1=Gontcharov | first1=G. A.
| journal=Astronomy Letters | postscript=.
| volume=32 | issue=11 | pages=759–771 | date=2006
| bibcode=2006AstL...32..759G | arxiv=1606.08053
| doi=10.1134/S1063773706110065 | s2cid=119231169 }}
| last1=Lépine | first1=Sébastien | last2=Shara | first2=Michael M.
| title=A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)
| journal=The Astronomical Journal
| volume=129 | issue=3 | pages=1483–1522 | date=March 2005
| doi=10.1086/427854 | bibcode=2005AJ....129.1483L
| arxiv=astro-ph/0412070 | s2cid=2603568 | postscript=. }}
| display-authors=1 | last1=De Medeiros | first1=J. R.
| last2=do Nascimento | first2=J. D. Jr. | last3=Sankarankutty | first3=S.
| last4=Costa | first4=J. M. | last5=Maia | first5=M. R. G.
| title=Rotation and lithium in single giant stars
| journal=Astronomy and Astrophysics | postscript=.
| volume=363 | pages=239–243 | date=November 2000
| bibcode=2000A&A...363..239D | arxiv=astro-ph/0010273 }}
}}
{{Stars of Andromeda}}
{{DEFAULTSORT:3 Andromedae}}
Category:Horizontal-branch stars