64 Andromedae
G-type giant star in the constellation Andromeda
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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]
 | |
| 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 |
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.