58 Andromedae, abbreviated 58 And, is a single[9] star in the northern constellation Andromeda. 58 Andromedae is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.78[2] The distance to this star, as determined from its annual parallax shift of 17.5 mas,[1] is 186 light years. 58 And is moving further from the Earth with a heliocentric radial velocity of +8 km/s.[2] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.159″ per year.[10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Andromeda |
Right ascension | 02h 08m 29.25999s[1] |
Declination | +37° 51′ 32.6861″[1] |
Apparent magnitude (V) | 4.78[2] |
Characteristics | |
Spectral type | A5 IV-V[3] |
B−V color index | 0.120±0.003[2] |
Astrometry | |
Radial velocity (Rv) | 7.60±1.78[2] km/s |
Proper motion (μ) | RA: +154.296[1] mas/yr Dec.: −43.304[1] mas/yr |
Parallax (π) | 17.5326 ± 0.2911 mas[1] |
Distance | 186 ± 3 ly (57.0 ± 0.9 pc) |
Absolute magnitude (MV) | 0.94[2] |
Details[4] | |
Mass | 2.00 M☉ |
Radius | 1.9[5] R☉ |
Luminosity | 35.55[2] L☉ |
Surface gravity (log g) | 3.89±0.14 cgs |
Temperature | 8,875±302 K |
Metallicity [Fe/H] | −0.98[6] dex |
Rotational velocity (v sin i) | 135[7] km/s |
Age | 425 Myr |
Other designations | |
Database references | |
SIMBAD | data |
This star is 425 million years old with a stellar classification of A5 IV-V,[3] indicating the spectrum displays mixed traits of an A-type main-sequence star and an older subgiant star. It is spinning rapidly with a projected rotational velocity of 135 km/s, which is giving the star an oblate shape with an equatorial bulge that is 6% larger than the polar radius.[7] The star has double[4] the mass of the Sun and about 1.9[5] times the Sun's radius. It is radiating 36[2] times the Sun's luminosity from its photosphere at an effective temperature of 8,875 K.[4]