64 Andromedae

Location of 64 Andromedae (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Andromeda[1]
Right ascension	02h 24m 24.91599s[2]
Declination	+50° 00′ 23.5560″[2]
Apparent magnitude (V)	5.19[3]
Characteristics
Evolutionary stage	red giant branch[2]
Spectral type	G8III[4]
U−B color index	+0.753[5]
B−V color index	+0.973[5]
Astrometry
Radial velocity (Rv)	–13.63[2] km/s
Proper motion (μ)	RA: +24.618±0.089[2] mas/yr Dec.: −36.335±0.117[2] mas/yr
Parallax (π)	8.0682±0.0972 mas[2]
Distance	404 ± 5 ly (124 ± 1 pc)
Absolute magnitude (MV)	−0.25[1]
Details
Mass	3.12±0.19[6] M☉
Radius	15.90±0.56[6] R☉
Luminosity	135.6±8.8[6] L☉
Surface gravity (log g)	2.55±0.05[6] cgs
Temperature	4,944±33[6] K
Metallicity [Fe/H]	−0.03±0.10[6] dex
Rotational velocity (v sin i)	0.69[7] km/s
Age	350±60[6] Myr
Other designations
64 And, BD+49°649, HD 14770, HIP 11220, HR 694, SAO 38005, PPM 27578[8]
Database references
SIMBAD	data

64 Andromedae, abbreviated 64 And, is a single^[9] star in the northern constellation of Andromeda. With a spectral type G8III, it is a deep-yellow coloured G-type giant approximately 404 light years from Earth with an apparent magnitude of 5.19.^[2] The star is moving closer to the Earth with a heliocentric radial velocity of –13.6 km/s.^[2]

This star is estimated to be 350 million years old^[6] with a negligible rotation rate, showing a projected rotational velocity of 0.69 km/s.^[7] It has a little more than 3 times the mass of the Sun and has expanded to 16 times the Sun's radius.^[6] 64 And is radiating 136 times the luminosity of the Sunfrom its enlarged photosphere at an effective temperature of 4,944 K^[6]

Position and chosen constellation

As to the faint triangle and context in which the star figures see 63 Andromedae.

References