Star in the constellation Andromeda
For the galaxy, see Andromeda X .
10 Andromedae , abbreviated 10 And , is an astrometric binary star system in the northern constellation of Andromeda . 10 Andromedae is the Flamsteed designation . It has an apparent visual magnitude of approximately 5.81, which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 6.6 mas , it is located 492 light years away. The system is moving toward the Earth with a heliocentric radial velocity of −1.1 km/s.
The visible component is an aging red giant star with a stellar classification of M0 III, which indicates it has consumed the hydrogen at its core and evolved off the main sequence . The measured angular diameter of this star, after correction for limb darkening , is 2.01±0.02 mas . At the estimated distance of 10 And, this yields a physical size of about 33 times the radius of the Sun . It is radiating 259 times the Sun's luminosity from its enlarged photosphere .
References
^ 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 .
^ 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 .
^ 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 .
^ Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters , 32 (11): 759–771, arXiv :1606.08053 , Bibcode :2006AstL...32..759G , doi :10.1134/S1063773706110065 , S2CID 119231169 .
^ 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:
2
⋅
R
∗
=
(
151
⋅
2.01
⋅
10
−
3
)
AU
0.0046491
AU
/
R
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≈
65.3
⋅
R
⨀
{\displaystyle {\begin{aligned}2\cdot R_{*}&={\frac {(151\cdot 2.01\cdot 10^{-3})\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 65.3\cdot R_{\bigodot }\end{aligned}}}
"10 And" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved September 17, 2018.
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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