Gamma Leporis

γ Leporis
Location of γ Leporis (circled)
Observation data
Epoch J2000      Equinox ICRS
Constellation Lepus
Right ascension 05h 44m 27.79062s
Declination −22° 26′ 54.1878″
Apparent magnitude (V) 3.587
Characteristics
Evolutionary stage main sequence
Spectral type F6 V
U−B color index −0.007
B−V color index +0.494
Astrometry
Radial velocity (Rv)−8.99±0.15 km/s
Proper motion (μ) RA: −291.757 mas/yr
Dec.: −368.521 mas/yr
Parallax (π)112.2960±0.1452 mas
Distance29.04 ± 0.04 ly
(8.91 ± 0.01 pc)
Absolute magnitude (MV)3.84
Details
Mass1.17+0.10
−0.06 M☉
Radius1.30±0.03 R☉
Luminosity (bolometric)2.36+0.13
−0.14 L☉
Surface gravity (log g)4.350±0.040 cgs
Temperature6,276+57
−61 K
Metallicity [Fe/H]−0.12 dex
Rotation5.91±0.66 days
Rotational velocity (v sin i)15 km/s
Age1.3 Gyr
Other designations
γ Lep, 13 Leporis, BD−22°1211, CD−22°2438, FK5 217, GJ 216 A, HD 38393, HIP 27072, HR 1983, SAO 170759
Database references
SIMBADdata

Gamma Leporis, Latinized from γ Leporis, is a star in the southern half of the constellation Lepus, southeast of Beta Leporis and southwest of Delta Leporis. With an apparent visual magnitude of 3.587, it is bright enough to be seen with the naked eye. Based upon an annual parallax shift of 112.3 mas as seen from Earth, its distance can be calculated as 29.04 light-years. It has a common proper motion companion, AK Leporis (or Gamma Leporis B), which is a variable star of the BY Draconis type and has an average brightness of magnitude 6.28. The two are 95″ apart can be well seen in binoculars. Gamma Leporis is a member of the Ursa Major Moving Group.

Gamma Leporis is an F-type main-sequence star with a stellar classification of F6 V. It is larger than the Sun with 1.30 times the radius of the Sun and 1.17 times the Sun's mass. The star is around 1.3 billion years old and is spinning with a rotation period of about six days. Based upon its stellar characteristics and distance from Earth, Gamma Leporis was considered a high-priority target for NASA's Terrestrial Planet Finder mission. It has been examined for an infrared excess, but none has been observed.

A 1971 NASA catalog of named stars listed this star as Kursi al Jabbar, from the Arabic Al Kursiyy al Jabbār "the footstool of the giant [Orion]", which referred to the asterism formed by Alpha, Beta, Gamma, and Delta Leporis.

Van Biesbroeck's star catalog of 1961 lists the red dwarf star VB 1 as a companion of Gamma Leporis, but this is a background star that is not physically associated. It should not be confused with AK Leporis (Gamma Leporis B), which is a true companion star.

See also

References

  1. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. 1 2 3 4 Gutierrez-Moreno, A.; et al. (1966). "A system of photometric standards". Publicaciones del Departamento de Astronomia de la Universidadde Chile. 1: 1. Bibcode:1966PDAUC...1....1G.
  3. 1 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. S2CID 55727428.
  4. 1 2 3 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. S2CID 118577511. Note: see VizieR catalogue V/130.
  5. 1 2 3 4 5 6 Harada, Caleb K.; et al. (June 2024). "Setting the Stage for the Search for Life with the Habitable Worlds Observatory: Properties of 164 Promising Planet-survey Targets". The Astrophysical Journal Supplement Series. 272 (2). id. 30. arXiv:2401.03047. Bibcode:2024ApJS..272...30H. doi:10.3847/1538-4365/ad3e81.
  6. ↑ 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. 1 2 3 Montesinos, B.; et al. (September 2016). "Incidence of debris discs around FGK stars in the solar neighbourhood". Astronomy & Astrophysics. 593: 31. arXiv:1605.05837. Bibcode:2016A&A...593A..51M. doi:10.1051/0004-6361/201628329. S2CID 55251562. A51.
  8. ↑ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities". Contributi Osservatorio Astronomico di Padova in Asiago. 239 (1): 1. Bibcode:1970CoAsi.239....1B.
  9. 1 2 "LTT 2364 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2011-01-16.
  10. ↑ "STERNBILD HASE" (PDF). Archived from the original (PDF) on 2021-06-02. Retrieved 2022-01-19.
  11. ↑ Ammler-von Eiff, M.; Guenther, E. W. (October 2009). "Spectroscopic properties of cool Ursa Major group members". Astronomy & Astrophysics. 508 (2): 677–693. arXiv:0910.5913. Bibcode:2009A&A...508..677A. doi:10.1051/0004-6361/200912660. S2CID 119260429.
  12. ↑ Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), Jet Propulsion Laboratory, California Institute of Technology.
  13. ↑ Allen, R. H. (1899), Star Names: Their Lore and Meaning, p. 265
  14. ↑ van Biesbroeck, G. (November 1961). "A search for Stars of Low Luminosity". The Astronomical Journal. 66 (9): 528–530. Bibcode:1961AJ.....66..528V. doi:10.1086/108457.
  15. ↑ "VB 1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 3 March 2025.
  16. ↑ Kaler, James B. "Gamma Leporis". Stars. University of Illinois. Retrieved 2015-04-02.
  17. ↑ Reylé, Céline; Jardine, Kevin; Fouqué, Pascal; Caballero, Jose A.; Smart, Richard L.; Sozzetti, Alessandro (30 April 2021). "The 10 parsec sample in the Gaia era". Astronomy & Astrophysics. 650: A201. arXiv:2104.14972. Bibcode:2021A&A...650A.201R. doi:10.1051/0004-6361/202140985. S2CID 233476431. Data available at https://gruze.org/10pc/ Archived 12 March 2023 at the Wayback Machine