Gamma Leporis

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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
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[edit]

  1. ^ 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. 
  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. ^ 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. 
  4. ^ Evans, D. S. (June 20–24, 1966). Batten, Alan Henry; Heard, John Frederick, ed. "Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30". University of Toronto: International Astronomical Union. Bibcode:1967IAUS...30...57E.  |chapter= ignored (help)
  5. ^ 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. 
  6. ^ 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. 
  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. ^ a b "LTT 2364 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2011-01-16. 

External links[edit]