5 Andromedae

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]

Not to be confused with Andromeda V or ν Andromedae.
5 Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 23h 07m 45.38425s[1]
Declination +49° 17′ 44.7903″[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: +152.39[1] mas/yr
Dec.: +131.72[1] mas/yr
Parallax (π)29.12 ± 0.33[1] mas
Distance112 ± 1 ly
(34.3 ± 0.4 pc)
Absolute magnitude (MV)3.00[2]
Details[4]
Mass1.386+0.010
−0.009 M☉
Luminosity5.62[2] L☉
Surface gravity (log g)4.12±0.02 cgs
Temperature6,605±61 K
Metallicity [Fe/H]−0.09±0.05 dex
Rotational velocity (v sin i)9.7[5] km/s
Age2.28+0.12
−0.25 Gyr
Other designations
5 And, BD+48° 3944, FK5 1604, HD 218470, HIP 114210, HR 8805, SAO 52713[6]
Database references
SIMBADdata

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. van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
  2. 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, S2CID 119257644.
  3. 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, Bibcode:1974PASP...86...70C, doi:10.1086/129562.
  4. 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, arXiv:1301.1582, Bibcode:2013ApJ...764...78R, doi:10.1088/0004-637X/764/1/78, S2CID 118751608.
  5. Schröder, C.; et al. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo" (PDF), Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377.
  6. "5 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-31.
  7. 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, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  8. 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.
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