Gamma Leporis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lepus |
| Right ascension | 05h 44m 27.7904s[1] |
| Declination | −22° 26′ 54.176″[1] |
| Apparent magnitude (V) | 3.59 |
| Characteristics | |
| Spectral type | F6V[2] |
| U−B color index | −0.007[3] |
| B−V color index | +0.494[3] |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | −9.7[4] km/s |
| Proper motion (μ) | RA: −292.43[1] mas/yr Dec.: −368.46[1] mas/yr |
| Parallax (π) | 111.49 ± 0.60[1] mas |
| Distance | 29.3 ± 0.2 ly (8.97 ± 0.05 pc) |
| Absolute magnitude (MV) | 3.83 |
| Details | |
| Mass | 1.23 ± 0.05[5] M☉ |
| Radius | 1.33 ± 0.04[5] R☉ |
| Luminosity | 2.6 L☉ |
| Surface gravity (log g) | 4.10[6] cgs |
| Temperature | 6,299[6] K |
| Metallicity | [Fe/H] = −0.12[6] |
| Rotational velocity (v sin i) | 15[7] km/s |
| Age | 1.3[8] Gyr |
| Other designations | |
Gamma Leporis (γ Lep, γ Leporis) is a star that is located at a distance of about 29 light-years from Earth. Gamma Leporis lies in the south central part of the constellation Lepus, southeast of Beta Leporis and southwest of Delta Leporis. It has a common proper motion companion, AK Leporis, which is a variable star of the BY Draconis type.[9] The star is a member of the Ursa Major Moving Group.[5]
This star is larger than the Sun with 1.2 times the radius of the Sun and 1.3 times the Sun's mass.[5] Based upon its stellar characteristics and distance from Earth, Gamma Leporis was considered a high-priority target for NASA's Terrestrial Planet Finder mission.
See also
References
- 1 2 3 4 5 Perryman, M. A. C.; et al. (1997). "The Hipparcos Catalogue". Astronomy and Astrophysics. 323: L49–L52. Bibcode:1997A&A...323L..49P.
- ↑ 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 Gutierrez-Moreno, A.; et al. (1966). "A system of photometric standards". Publicaciones del Departamento de Astronomia de la Universidadde Chile. 1. Bibcode:1966PDAUC...1....1G.
- ↑ Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick. Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. Bibcode:1967IAUS...30...57E.
- 1 2 3 4 Ammler-von Eiff, M.; Guenther, E. W. (October 2009). "Spectroscopic properties of cool Ursa Major group members". arXiv:0910.5913. Bibcode:2009A&A...508..677A. doi:10.1051/0004-6361/200912660.
- 1 2 3 Gratton, R. G.; Carretta, E.; Castelli, F. (October 1996). "Abundances of light elements in metal-poor stars. I. Atmospheric parameters and a new T_eff_ scale". Astronomy and Astrophysics. 314: 191–203. arXiv:astro-ph/9603011. Bibcode:1996A&A...314..191G.
- ↑ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities". Contributi Osservatorio Astronomico di Padova in Asiago. 239 (1). Bibcode:1970CoAsi.239....1B.
- ↑ Holmberg, J.; Nordström, B.; Andersen, J. (July 2009). "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics". Astronomy and Astrophysics Supplement Series. 501 (3): 941–947. arXiv:0811.3982. Bibcode:2009A&A...501..941H. doi:10.1051/0004-6361/200811191. Note: see VizieR catalogue V/130.
- 1 2 "LTT 2364 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2011-01-16.
External links
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