58 Andromedae
| 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 |
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]
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]
References
- ^ a b c d e f g h i Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
- ^ Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.
- ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
- ^ a b c David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
- ^ Gebran, M.; et al. (2016), "A new method for the inversion of atmospheric parameters of A/Am stars", Astronomy & Astrophysics, 589: A83, arXiv:1603.01146, Bibcode:2016A&A...589A..83G, doi:10.1051/0004-6361/201528052, S2CID 118549566.
- ^ a b van Belle, Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review, 20 (1): 51, arXiv:1204.2572, Bibcode:2012A&ARv..20...51V, doi:10.1007/s00159-012-0051-2, S2CID 119273474.
- ^ "58 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 2, 2018.
- ^ De Rosa, R. J.; et al. (2014), "The VAST Survey - III. The multiplicity of A-type stars within 75 pc", Monthly Notices of the Royal Astronomical Society, 437 (2): 1216–1240, arXiv:1311.7141, Bibcode:2014MNRAS.437.1216D, doi:10.1093/mnras/stt1932.
- ^ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal, 129 (3): 1483–1522, arXiv:astro-ph/0412070, Bibcode:2005AJ....129.1483L, doi:10.1086/427854, S2CID 2603568.