OP Andromedae

OP Andromedae
OP Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 01h 36m 27.1998s
Declination +48° 43′ 21.994″
Apparent magnitude (V) 6.22
Characteristics
Spectral type K1III
B−V color index 1.21
Variable type BY Draconis
Astrometry
Radial velocity (Rv) -43.2 km/s
Proper motion (μ) RA: -16.36 mas/yr
Dec.: -18.69 mas/yr
Parallax (π) 7.77 ± 0.82 mas
Distance approx. 420 ly
(approx. 130 pc)
Absolute magnitude (MV) 7.47
Details
Mass 0.8 M☉
Radius 0.9 R☉
Luminosity 0.4 L☉
Temperature 3,500–5,000 K
Other designations
BD+47° 460, HD 9746, HIP 7493, SAO 37351, HR 454.
Database references
SIMBAD data

OP Andromedae is a variable star.

References


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