60 Andromedae is a star system in the northern constellation of Andromeda, located to the east-northeast of Gamma Andromedae. 60 Andromedae is the Flamsteed designation (abbreviated 60 And), though the star also bears the Bayer designation b Andromedae.[11] It is bright enough to be seen by the naked eye on a dark night, having an apparent visual magnitude of 4.82.[3] Based upon parallax measurements, it is located at a distance of approximately 620 light-years (190 parsecs) from Earth.[2] The system is drifting closer with a heliocentric radial velocity of –46 km/s.[5]

60 Andromedae
Location of 60 Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda[1]
Right ascension 02h 13m 13.322s[2]
Declination +44° 13′ 53.93″[2]
Apparent magnitude (V) +4.82[3]
Characteristics
Spectral type K3.5 III Ba0.4[4]
U−B color index +1.74[3]
B−V color index +1.48[3]
Astrometry
Radial velocity (Rv)–46.3[5] km/s
Proper motion (μ) RA: –20.90 mas/yr[6]
Dec.: –14.46 mas/yr[6]
Parallax (π)5.2634±0.2576 mas[2]
Distance620 ± 30 ly
(190 ± 9 pc)
Absolute magnitude (MV)−1.19[1]
Orbit[7]
Period (P)748.2±0.4 days
Semi-major axis (a)2.4±0.6 mas
Eccentricity (e)0.80
Inclination (i)54.1±19.9°
Longitude of the node (Ω)344.5±10.3°
Periastron epoch (T)37886±11 HJD
Argument of periastron (ω)
(secondary)
358±6°
Semi-amplitude (K1)
(primary)
4.88 km/s
Details
60 And A
Mass2.0+0.7
−0.3
[8] M
Luminosity685[1] L
Surface gravity (log g)1.70±0.44[9] cgs
Temperature4,054±42[9] K
Metallicity [Fe/H]−0.13±0.12[9] dex
Age2.02[10] Gyr
60 And B
Mass0.5±0.1[8] M
Other designations
b Andromedae[11], BD+43 447, HD 13520, HIP 10340, HR 643, SAO 37867, PPM 44882, IRAS 02100+4359[12]
Database references
SIMBADdata

This system is known to have three components. The primary is an aging giant star with a stellar classification of K3.5 III Ba0.4, meaning that an overabundance of singly-ionized barium (Ba+ ion) is observed in the spectrum of the star, making it a barium star. This star is about 2[10] billion years old with double the mass of the Sun.[8] It is radiating 685[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,054 K.[9] The secondary component is likely a degenerate white dwarf with a orbital period of 748.2 days and an eccentricity of 0.34. There is a third component at an angular separation of 0.22 arcseconds.[4]

References

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  1. ^ a b c d 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.
  2. ^ a b c d 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. Gaia DR2 record for this source at VizieR.
  3. ^ a b c d Argue, A. N. (1966), "UBV photometry of 550 F, G and K type stars", Monthly Notices of the Royal Astronomical Society, 133 (4): 475–493, Bibcode:1966MNRAS.133..475A, doi:10.1093/mnras/133.4.475.
  4. ^ a b 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.
  5. ^ a b Wilson, Ralph Elmer (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Washington: Carnegie Institution of Washington, Bibcode:1953GCRV..C......0W.
  6. ^ van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  7. ^ Ren, Shulin; Fu, Yanning (March 2013), "Hipparcos Photocentric Orbits of 72 Single-lined Spectroscopic Binaries", The Astronomical Journal, 145 (3): 7, Bibcode:2013AJ....145...81R, doi:10.1088/0004-6256/145/3/81, S2CID 120199240, 81.
  8. ^ a b c Pourbaix, D.; Boffin, H. M. J. (February 2003), "Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component", Astronomy and Astrophysics, 398 (3): 1163–1177, arXiv:astro-ph/0211483, Bibcode:2003A&A...398.1163P, doi:10.1051/0004-6361:20021736, S2CID 12361870.
  9. ^ a b c d Koleva, M.; Vazdekis, A. (February 2012), "Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library", Astronomy & Astrophysics, 538: A143, arXiv:1111.5449, Bibcode:2012A&A...538A.143K, doi:10.1051/0004-6361/201118065, S2CID 53999614.
  10. ^ a b Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114.
  11. ^ a b Tirion; Rappaport; Lovi (1987), Willmann-Bell, Inc. (ed.), Uranometria 2000.0 - Volume II - The Southern Hemisphere to +6°, Richmond, Virginia, USA, ISBN 0-943396-15-8.
  12. ^ "60 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-03-26.
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  1. "* 60 And". SIMBAD. Centre de données astronomiques de Strasbourg.