51 Arietis

51 Arietis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aries
Right ascension 03h 02m 26.02632s[1]
Declination +26° 36′ 33.2563″[1]
Apparent magnitude (V) 6.623 ± 0.005[2]
Characteristics
Spectral type G8 V[3]
B−V color index 0.715[4]
Astrometry
Radial velocity (Rv)+9.5±0.1[5] km/s
Proper motion (μ) RA: +233.13[1] mas/yr
Dec.: –168.88[1] mas/yr
Parallax (π)48.45 ± 0.47[1] mas
Distance67.3 ± 0.7 ly
(20.6 ± 0.2 pc)
Absolute bolometric
magnitude (Mbol)		4.85 ± 0.07[2]
Details
Mass1.04[2] M☉
Radius0.99 ± 0.04[2] R☉
Luminosity0.92[6] L☉
Surface gravity (log g)4.46[6] cgs
Temperature5,666[6] K
Metallicity [Fe/H]0.15[6] dex
Rotational velocity (v sin i)4.08[4] km/s
Age1.40[5] Gyr
Other designations
BD+26° 503, HD 18803, HIP 14150, SAO 75696, Gl 120.2[7]
Database references
SIMBADdata
ARICNSdata

51 Arietis (abbreviated 51 Ari) is a star in the northern constellation of Aries. 51 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 6.6[2] and is an estimated 67.3 light-years (20.6 parsecs) distant from the Earth.[1] This is a G-type main sequence star with a stellar classification of G8 V.[3] Similar to the Sun, it has 1.04 times the mass and 0.99 times the radius.[2] It radiates 92%[6] of the Sun's luminosity from its outer atmosphere at an effective temperature of 5,666 K.[6] This heat gives it the golden-hued glow of a G-type star.[8]

References

  1. 1 2 3 4 5 6 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.
  2. 1 2 3 4 5 6 Fuhrmann, Klaus (February 2008), "Nearby stars of the Galactic disc and halo - IV", Monthly Notices of the Royal Astronomical Society, 384 (1): 173–224, 176, Bibcode:2008MNRAS.384..173F, doi:10.1111/j.1365-2966.2007.12671.x.
  3. 1 2 Montes, D.; et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society, 328 (1): 45–63, arXiv:astro-ph/0106537, Bibcode:2001MNRAS.328...45M, doi:10.1046/j.1365-8711.2001.04781.x.
  4. 1 2 Martínez-Arnáiz, R.; et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics, 520: A79, arXiv:1002.4391, Bibcode:2010A&A...520A..79M, doi:10.1051/0004-6361/200913725.
  5. 1 2 Casagrande, L.; et al. (June 2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy and Astrophysics, 530: A138, arXiv:1103.4651, Bibcode:2011A&A...530A.138C, doi:10.1051/0004-6361/201016276.
  6. 1 2 3 4 5 6 Takeda, Yoichi (April 2007), "Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database", Publications of the Astronomical Society of Japan, 59 (2): 335–356, Bibcode:2007PASJ...59..335T, doi:10.1093/pasj/59.2.335.
  7. ↑ "LTT 10989 -- High proper-motion Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-16.
  8. ↑ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 10, 2012, retrieved 2012-01-16


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