60 Andromedae

This article is about b Andromedae. Not to be confused with β Andromedae.
60 Andromedae
Location of 60 Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 02h 13m 13.32387s[1]
Declination +44° 13′ 53.9546″[1]
Apparent magnitude (V) +4.82[2]
Characteristics
Spectral type K3.5 III Ba0.4[3]
U−B color index +1.74[2]
B−V color index +1.48[2]
Astrometry
Radial velocity (Rv)–46.3[4] km/s
Proper motion (μ) RA: –20.90[1] mas/yr
Dec.: –14.46[1] mas/yr
Parallax (π)6.15 ± 0.63 mas[1]
Distanceapprox. 530 ly
(approx. 160 pc)
Orbit[5]
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[6] M☉
Surface gravity (log g)1.70±0.44[7] cgs
Temperature4054±42[7] K
Metallicity [Fe/H]−0.13±0.12[7] dex
60 And B
Mass0.5±0.1[6] M☉
Other designations
b Andromedae,[8] BD+43 447, HD 13520, HIP 10340, HR 643, IRAS 02100+4359, SAO 37867, PPM 44882
Database references
SIMBADdata

60 Andromedae (abbreviated 60 And) is a star system in the northern constellation of Andromeda, located to the west-northwest of Gamma Andromedae. 60 Andromedae is the Flamsteed designation though the star also bears the Bayer designation b Andromedae. It is bright enough to be seen by the naked eye with an apparent visual magnitude of 4.82.[2] Based upon parallax measurements made during the Hipparcos mission, it is at a distance of roughly 530 light-years (160 parsecs) from Earth.[1]

This system is known to have three components. The primary is a giant star with a stellar classification of K3.5 III Ba0.4, meaning that an overabundance of barium ionized one time is observed in the spectrum of the star, making it a barium star. The secondary component is likely a white dwarf with a period of 748.2 days and an eccentricity of 0.34. There is a third component at an angular separation of 0.22 arcseconds.[3]

  1. ^ a b c d e f Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference mnras133_475 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
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  6. ^ a b Cite error: The named reference aaa398_1163 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference aaa538_A143 was invoked but never defined (see the help page).
  8. ^ 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.