| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 02m 26.02628s [1] |
| Declination | +26° 36′ 33.2602″ [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: +233.122
[1]
mas/
yr Dec.: –168.438 [1] mas/ yr |
| Parallax (π) | 47.1551 ± 0.0603 mas [1] |
| Distance | 69.17 ± 0.09
ly (21.21 ± 0.03 pc) |
|
Absolute bolometric magnitude (Mbol) | 4.85±0.07 [2] |
| Details | |
| Mass | 1.04 [2] M☉ |
| Radius | 0.99 [2] R☉ |
| Luminosity | 0.92 [6] L☉ |
| Surface gravity (log g) | 4.46 [6] cgs |
| Temperature | 5,666 [6] K |
| Metallicity [Fe/H] | 0.15 [6] dex |
| Rotational velocity (v sin i) | 4.08 [4] km/s |
| Age | 1.40 [5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
51 Arietis is a star in the northern constellation of Aries. 51 Arietis is the Flamsteed designation. It is a dim, yellow-hued star – a challenge to view with the naked eye, having an apparent visual magnitude of 6.6. [2] Based upon parallax measurements, the star is located at an estimated distance of 67.3 light-years (20.6 parsecs) from the Sun. [8] It is receding from the Earth with a heliocentric radial velocity of +9.5 km/s, [5] and is a member of the IC 2391 moving group. [3]
This is an ordinary 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 Sun's radius. [2] It is 1.4 [5] billion years old with a leisurely rotation rate, showing a projected rotational velocity of 4 km/s. [4] The atmospheric metallicity is higher than solar. [6] The star radiates 92% [6] of the Sun's luminosity from its photosphere at an effective temperature of 5,666 K. [6] This heat gives it the golden-hued glow of a G-type star. [9]
References
- ^ a b c d e 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. Gaia DR2 record for this source at VizieR.
- ^ a b c d e f 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.
- ^ a b c 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, S2CID 55727428.
- ^ a b c 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" (PDF), Astronomy and Astrophysics, 520: A79, arXiv: 1002.4391, Bibcode: 2010A&A...520A..79M, doi: 10.1051/0004-6361/200913725, S2CID 43455849, archived from the original (PDF) on 2017-09-22, retrieved 2018-11-04.
- ^ a b c d 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, S2CID 56118016.
- ^ a b c d e f g 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.
- ^ 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.
- ^ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2012-01-16
External links
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 02m 26.02628s [1] |
| Declination | +26° 36′ 33.2602″ [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: +233.122
[1]
mas/
yr Dec.: –168.438 [1] mas/ yr |
| Parallax (π) | 47.1551 ± 0.0603 mas [1] |
| Distance | 69.17 ± 0.09
ly (21.21 ± 0.03 pc) |
|
Absolute bolometric magnitude (Mbol) | 4.85±0.07 [2] |
| Details | |
| Mass | 1.04 [2] M☉ |
| Radius | 0.99 [2] R☉ |
| Luminosity | 0.92 [6] L☉ |
| Surface gravity (log g) | 4.46 [6] cgs |
| Temperature | 5,666 [6] K |
| Metallicity [Fe/H] | 0.15 [6] dex |
| Rotational velocity (v sin i) | 4.08 [4] km/s |
| Age | 1.40 [5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
51 Arietis is a star in the northern constellation of Aries. 51 Arietis is the Flamsteed designation. It is a dim, yellow-hued star – a challenge to view with the naked eye, having an apparent visual magnitude of 6.6. [2] Based upon parallax measurements, the star is located at an estimated distance of 67.3 light-years (20.6 parsecs) from the Sun. [8] It is receding from the Earth with a heliocentric radial velocity of +9.5 km/s, [5] and is a member of the IC 2391 moving group. [3]
This is an ordinary 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 Sun's radius. [2] It is 1.4 [5] billion years old with a leisurely rotation rate, showing a projected rotational velocity of 4 km/s. [4] The atmospheric metallicity is higher than solar. [6] The star radiates 92% [6] of the Sun's luminosity from its photosphere at an effective temperature of 5,666 K. [6] This heat gives it the golden-hued glow of a G-type star. [9]
References
- ^ a b c d e 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. Gaia DR2 record for this source at VizieR.
- ^ a b c d e f 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.
- ^ a b c 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, S2CID 55727428.
- ^ a b c 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" (PDF), Astronomy and Astrophysics, 520: A79, arXiv: 1002.4391, Bibcode: 2010A&A...520A..79M, doi: 10.1051/0004-6361/200913725, S2CID 43455849, archived from the original (PDF) on 2017-09-22, retrieved 2018-11-04.
- ^ a b c d 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, S2CID 56118016.
- ^ a b c d e f g 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.
- ^ 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.
- ^ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2012-01-16