Beta Andromedae

Location of β Andromedae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Andromeda
Right ascension 01
Declination +35° 37′ 14.0075″
Apparent magnitude (V) 2.05
Characteristics
Spectral type M0 III
U−B color index +1.96
B−V color index +1.57
V−R color index 0.9
R−I color index +1.00
Variable type Semiregular
Astrometry
Radial velocity (Rv) 0.06 ± 0.13 km/s
Proper motion (μ) RA: 175.90 mas/yr
Parallax (π) 16.52 ± 0.56mas
Distance 197 ± 7 ly
(61 ± 2 pc)
Absolute magnitude (MV) –1.76
Details
Mass 3–4M
Radius 100R
Luminosity 1,995L
Surface gravity (log g) 1.52
Temperature 3,842K
Metallicity [Fe/H] –0.05dex
Rotational velocity (v sin i) 7.2 km/s
Other designations
Mirach, Merach, Mirac, Mizar, β And, Beta Andromedae, Beta And, 43 Andromedae, 43 And, BD+34°198, FK5 42, GJ 53.3, GJ 9044, HD 6860, HIP 5447, HR 337, LTT 10420, NLTT 3848, SAO 54471, WDS 01097+3537A.
Database references
SIMBAD data

Get more info about Mirach in Wikipedia

This article uses material from the Wikipedia article
Mirach, which is released under the Creative Commons Attribution-Share-Alike License 3.0