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] |
| 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 |
13 Leporis, Gl 216 A, HR 1983, BD -22°1211, CD -22°2438, HD 38393, GCTP 1316.00, SAO 170759, FK5 217, HIP 27072. [9] |
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 is considered a high-priority target for NASA's Terrestrial Planet Finder mission.
[edit] References
- ^ a b c d e 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.
- ^ a b 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.
- ^ a b c d Ammler-von Eiff, M.; Guenther, E. W. (October 2009). "Spectroscopic properties of cool Ursa Major group members". arXiv. arXiv:0910.5913. Bibcode 2009A&A...508..677A. doi:10.1051/0004-6361/200912660.
- ^ a b c 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. Bibcode 2009A&A...501..941H. doi:10.1051/0004-6361/200811191. Note: see VizieR catalogue V/130.
- ^ a b "LTT 2364 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LTT+2364. Retrieved 2011-01-16.
[edit] External links
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In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems possibly located within declared distance interval, but probably not.
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Sirius ( 8.58 ± 0.03 ly; 2 stars)
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Altair ( 16.69 ± 0.04 ly; 1 star)
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In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Italic are systems possibly located within declared distance interval, but likely not. Total about 50 (47–52) systems.
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