58 Andromedae
Star in the constellation Andromeda
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58 Andromedae, abbreviated 58 And, is a single[10] 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[1] The distance to this star, as determined from its annual parallax shift of 17.5 mas,[2] is 186 light years. 58 And is moving further from the Earth with a heliocentric radial velocity of +8 km/s.[1] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.159″ per year.[11]
 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda[1] |
| Right ascension | 02h 08m 29.25999s[2] |
| Declination | +37° 51′ 32.6861″[2] |
| Apparent magnitude (V) | 4.78[1] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A5 IV-V[4] |
| B−V color index | 0.120±0.003[1] |
| Astrometry | |
| Radial velocity (Rv) | 7.60±1.78[1] km/s |
| Proper motion (μ) | RA: +154.296[2] mas/yr Dec.: −43.304[2] mas/yr |
| Parallax (π) | 17.5326±0.2911 mas[2] |
| Distance | 186 ± 3 ly (57.0 ± 0.9 pc) |
| Absolute magnitude (MV) | 0.94[1] |
| Details[5] | |
| Mass | 2.00 M☉ |
| Radius | 1.9[6] R☉ |
| Luminosity | 35.55[1] L☉ |
| Surface gravity (log g) | 3.89±0.14 cgs |
| Temperature | 8,875±302 K |
| Metallicity [Fe/H] | −0.98[7] dex |
| Rotational velocity (v sin i) | 135[8] km/s |
| Age | 425 Myr |
| Other designations | |
| 58 And, BD+37°486, HD 13041, HIP 9977, HR 620, SAO 55289, PPM 66995[9] | |
| Database references | |
| SIMBAD | data |
This star is 425 million years old with a stellar classification of A5 IV-V,[4] 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.[8] The star has double[5] the mass of the Sun and about 1.9[6] times the Sun's radius. It is radiating 36[1] times the Sun's luminosity from its photosphere at an effective temperature of 8,875 K.[5]