Zeta Andromedae

Not to be confused with Z Andromedae.
ζ Andromedae
Location of ζ Andromedae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Andromeda
Right ascension 00h 47m 20.32547s[1]
Declination +24° 16′ 01.8408″[1]
Apparent magnitude (V) 3.92 to 4.14[2]
Characteristics
Spectral type K1III + KV[3]
U−B color index +0.90[4]
B−V color index +1.12[4]
R−I color index +0.59[4]
Variable type ELL/RS[2]
Astrometry
Radial velocity (Rv)−24.43 ± 0.1[5] km/s
Proper motion (μ) RA: −101.17[1] mas/yr
Dec.: −81.77[1] mas/yr
Parallax (π)17.24 ± 0.26 mas[1]
Distance189 ± 3 ly
(58.0 ± 0.9 pc)
Absolute magnitude (MV)+0.14[3]
Orbit[3]
Period (P)17.769426
Semi-major axis (a)2.7 R*
Eccentricity (e)0.0
Inclination (i)65 ± 5°
Details
Aa
Mass2.6 ± 0.4[3] M☉
Radius15.9 ± 0.8[6] R☉
Luminosity95.5[3] L☉
Surface gravity (log g)2.8[3] cgs
Temperature4,665 ± 140[6] K
Metallicity [Fe/H]−0.30[3] dex
Rotation17.77 days[7]
Rotational velocity (v sin i)41.4 ± 0.2[3] km/s
Ab
Mass0.75[3] M☉
Other designations
ζ And, Zeta Andromedae, Zeta And, 34 Andromedae, 34 And, BD+23 106, CCDM J00473+2416A, FK5 27, GC 940, HD 4502, HIP 3693, HR 215, IDS 00421+2344 A, PPM 90149, SAO 74267, WDS 00473+2416A.
Database references
SIMBADdata

Zeta Andromedae (Zeta And, ζ Andromedae, ζ And) is a star system in the constellation Andromeda. It is approximately 189 light-years from Earth.

Zeta Andromedae is the star's Bayer designation. It also has the Flamsteed designation 34 Andromedae and multiple other designations in stellar catalogues.

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