![]() ![]() Location of β Andromedae (circled) |
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Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
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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.
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Database references | |
SIMBAD | data |