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 | |
| Proper motion (μ) | RA: +233.13[1] mas/yr Dec.: –168.88[1] mas/yr |
| Parallax (π) | 48.45 ± 0.47[1] mas |
| Distance | 67.3 ± 0.7 ly (20.6 ± 0.2 pc) |
| Absolute bolometric magnitude (Mbol) | 4.85 ± 0.07[2] |
| Details | |
| Mass | 1.04[2] M☉ |
| Radius | 0.99 ± 0.04[2] R☉ |
| Luminosity | 0.92[5] L☉ |
| Surface gravity (log g) | 4.46[5] cgs |
| Temperature | 5,666[5] K |
| Metallicity [Fe/H] | 0.15[5] dex |
| Rotational velocity (v sin i) | 4.08[4] km/s |
| Other designations | |
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%[5] of the Sun's luminosity from its outer atmosphere at an effective temperature of 5,666 K.[5] This heat gives it the golden-hued glow of a G-type star.[7]
References
- 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. - 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.
- 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.
- 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.
- 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.
- ↑ "LTT 10989 -- High proper-motion Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-16.
- ↑ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, retrieved 2012-01-16
External links
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