64 Andromedae
64 Andromedae, abbreviated 64 And, is a single star in the northern constellation of Andromeda. With a spectral type G8III, it is a deep-yellow coloured G-type giant approximately 419 light years from Earth with an apparent magnitude of 5.19. The star is moving closer to the Earth with a heliocentric radial velocity of –13 km/s.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 02h 24m 24.91594s |
| Declination | +50° 00′ 23.5619″ |
| Apparent magnitude (V) | 5.19 |
| Characteristics | |
| Spectral type | G8III |
| U−B color index | 1.74 |
| B−V color index | 0.976 |
| Astrometry | |
| Radial velocity (Rv) | –13.34 km/s |
| Proper motion (μ) | RA: +24.618±0.272 mas/yr Dec.: −36.335±0.262 mas/yr |
| Parallax (π) | 7.7770 ± 0.1296 mas |
| Distance | 419 ± 7 ly (129 ± 2 pc) |
| Absolute magnitude (MV) | −0.25 |
| Details | |
| Mass | 3.12±0.19 M☉ |
| Radius | 15.90±0.56 R☉ |
| Luminosity | 135.6±8.8 L☉ |
| Surface gravity (log g) | 2.55±0.05 cgs |
| Temperature | 4,944±33 K |
| Metallicity [Fe/H] | −0.03±0.10 dex |
| Rotational velocity (v sin i) | 0.69 km/s |
| Age | 350±60 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This star is estimated to be 350 million years old with a negligible rotation rate, showing a projected rotational velocity of 0.69 km/s. It has a little more than 3 times the mass of the Sun and has expanded to 16 times the Sun's radius. 64 And is radiating 136 times the luminosity of the Sun from its enlarger photosphere at an effective temperature of 4,944
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