Gamma Leporis

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
Distance29.3 ± 0.2 ly
(8.97 ± 0.05 pc)
Absolute magnitude (MV)3.83
Details
Mass1.23 ± 0.05[5] M☉
Radius1.33 ± 0.04[5] R☉
Luminosity2.6 L☉
Surface gravity (log g)4.10[6] cgs
Temperature6,299[6] K
Metallicity[Fe/H] = −0.12[6]
Rotational velocity (v sin i)15[7] km/s
Age1.3[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 was considered a high-priority target for NASA's Terrestrial Planet Finder mission.

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Perryman, M. A. C. et al. (1997). "The Hipparcos Catalogue". Astronomy and Astrophysics 323: L49–L52. Bibcode:1997A&A...323L..49P.
  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.
  3. ↑ 3.0 3.1 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.
  4. ↑ 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.
  5. ↑ 5.0 5.1 5.2 5.3 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.
  6. ↑ 6.0 6.1 6.2 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.
  7. ↑ 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.
  8. ↑ 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.
  9. ↑ 9.0 9.1 "LTT 2364 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2011-01-16.

External links