Gamma Leporis
Star Gamma Leporis |
|||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AladinLite | |||||||||||||||||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|||||||||||||||||||||||||
Constellation | Hare | ||||||||||||||||||||||||
Right ascension | 05 h 44 m 27.79 s | ||||||||||||||||||||||||
declination | −22 ° 26 ′ 54.2 ″ | ||||||||||||||||||||||||
Apparent brightness | 3.59 likes | ||||||||||||||||||||||||
Typing | |||||||||||||||||||||||||
B − V color index | +0.494 | ||||||||||||||||||||||||
U − B color index | −0.007 | ||||||||||||||||||||||||
Spectral class | F6 V | ||||||||||||||||||||||||
Astrometry | |||||||||||||||||||||||||
Radial velocity | −9.7 km / s | ||||||||||||||||||||||||
parallax | 111.49 ± 0.60 mas | ||||||||||||||||||||||||
distance | 29.3 ± 0.2 ly 8.97 ± 0.05 pc |
||||||||||||||||||||||||
Visual absolute brightness M vis | 3.83 likes | ||||||||||||||||||||||||
Proper movement | |||||||||||||||||||||||||
Rec. Share: | −292.43 mas / a | ||||||||||||||||||||||||
Dec. portion: | −368.46 mas / a | ||||||||||||||||||||||||
Physical Properties | |||||||||||||||||||||||||
Dimensions | 1.23 ± 0.05 M ☉ | ||||||||||||||||||||||||
radius | 1.33 ± 0.04 R ☉ | ||||||||||||||||||||||||
Luminosity |
2.6 L ☉ |
||||||||||||||||||||||||
Effective temperature | 6,299 K | ||||||||||||||||||||||||
Metallicity [Fe / H] | −0.12 | ||||||||||||||||||||||||
Age | 1.3 billion a | ||||||||||||||||||||||||
Other names and catalog entries |
|||||||||||||||||||||||||
|
Gamma Leporis ( γ Lep , γ Leporis ) is a main sequence of spectral F which is approximately 29 light years from the sun is removed. Gamma Leporis is located in the constellation Rabbit , southeast of Beta Leporis and southwest of Delta Leporis . The star has a companion with the same proper motion , AK Leporis , the one variables of BY Draconis type is. Gamma Leporis is a member of the Ursa Major group .
The star is larger than the sun and has 1.2 times the radius and 1.3 times the mass of the sun. Because of its stellar properties and its (relatively small) distance to Earth was Gamma Leporis as one of the main objectives for the mission Planet Finder Terrestrial of NASA selected. However, this mission was postponed several times and finally canceled in 2011.
Web links
- SolStation.com: Gamma Leporis 3? Retrieved May 29, 2015 . (English)
- Stellar Database: Gamma Leporis. Retrieved May 29, 2015 . (English)
Individual evidence
- ^ A b c Perryman, MAC et al .: The Hipparcos Catalog . bibcode : 1997A & A ... 323L..49P .
- ↑ a b Gutierrez-Moreno, A. et al .: A system of photometric standards . bibcode : 1966PDAUC ... 1 .... 1G .
- ↑ Montes, D. et al .: Late-type stars members of young stellar kinematic groups - I. Single stars . arxiv : astro-ph / 0106537 .
- ^ Evans, DS: The Revision of the General Catalog of Radial Velocities . bibcode : 1967IAUS ... 30 ... 57E .
- ↑ a b c Ammler-von Eiff, M .; Guenther, EW: Spectroscopic properties of cool Ursa major group members . arxiv : 0910.5913 .
- ↑ a b Gratton, RG; Carretta, E .; Castelli, F .: Abundances of light elements in metal-poor stars. I. Atmospheric parameters and a new T_eff scale . arxiv : astro-ph / 9603011 .
- ↑ Holmberg, J .; Nordström, B .; Andersen, J .: The Geneva-Copenhagen Survey of the Solar neighborhood III. Improved distances, ages, and kinematics . arxiv : 0811.3982 .
- ↑ SIMBAD: LTT 2364. Retrieved May 29, 2015 .