Astronomy:5 Andromedae
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 07m 45.38355s[1] |
| Declination | +49° 17′ 44.7904″[1] |
| Apparent magnitude (V) | 5.68[2] |
| Characteristics | |
| Spectral type | F5 V[3] |
| B−V color index | 0.449±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.6±0.3[2] km/s |
| Proper motion (μ) | RA: 151.592(34)[1] mas/yr Dec.: 131.723(31)[1] mas/yr |
| Parallax (π) | 29.0956 ± 0.0408[1] mas |
| Distance | 112.1 ± 0.2 ly (34.37 ± 0.05 pc) |
| Absolute magnitude (MV) | 3.00[2] |
| Details[4] | |
| Mass | 1.386+0.010 −0.009 M☉ |
| Luminosity | 5.62[2] L☉ |
| Surface gravity (log g) | 4.12±0.02 cgs |
| Temperature | 6,605±61 K |
| Metallicity [Fe/H] | −0.09±0.05 dex |
| Rotational velocity (v sin i) | 9.7[5] km/s |
| Age | 2.28+0.12 −0.25 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
5 Andromedae is a single,[7] yellow-white hued star in the northern constellation of Andromeda. Its designation comes from a catalogue of stars by English astronomer John Flamsteed, published in 1712. The star is faintly visible to the naked eye, having an apparent visual magnitude of 5.68.[2] Based upon an annual parallax shift of 29.12[1] mas as seen from Earth, it is located 112 light years away. 5 Andromedae is moving closer to the Sun with a radial velocity of −2.6 km/s.[2] It has a relatively high proper motion, advancing across the celestial sphere at the rate of 0.201 arc seconds per year.[8]
This is an ordinary F-type main-sequence star with a stellar classification of F5 V.[3] It is estimated to be 2.3[4] billion years old and is spinning with a projected rotational velocity of 9.7 km/s.[5] The star has 1.39 times the mass of the Sun. It is radiating 5.6[2] times the Sun's luminosity from its photosphere at an effective temperature of about 6,605 K.[4]
Within Andromeda it is the second of a northerly chain asterism – 7, 8, 11 are further south-westward, with 3 Andromedae in the other direction.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Cowley, Anne; Fraquelli, Dorothy (February 1974), "MK Spectral Types for Some Bright F Stars", Publications of the Astronomical Society of the Pacific 86 (509): 70, doi:10.1086/129562, Bibcode: 1974PASP...86...70C.
- ↑ 4.0 4.1 4.2 Ramírez, I. et al. (February 2013), "Oxygen abundances in nearby FGK stars and the galactic chemical evolution of the local disk and halo", The Astrophysical Journal 764 (1): 78, doi:10.1088/0004-637X/764/1/78, Bibcode: 2013ApJ...764...78R.
- ↑ 5.0 5.1 Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo", Astronomy and Astrophysics 493 (3): 1099–1107, doi:10.1051/0004-6361:200810377, Bibcode: 2009A&A...493.1099S, http://goedoc.uni-goettingen.de/goescholar/bitstream/handle/1/9690/aa10377-08.pdf?sequence=2[yes|permanent dead link|dead link}}]
- ↑ "5 And". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=5+And.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ 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, doi:10.1086/427854, Bibcode: 2005AJ....129.1483L.
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