Kappa Leonis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo |
| Right ascension | 09h 24m 39.2591s[1] |
| Declination | +26° 10′ 56.367″[1] |
| Apparent magnitude (V) | 4.473[2] |
| Characteristics | |
| Spectral type | K2III[2] |
| U−B color index | +1.31[3] |
| B−V color index | +1.23[3] |
| Astrometry | |
| Radial velocity (Rv) | +27.94[4] km/s |
| Proper motion (μ) | RA: –31.13[1] mas/yr Dec.: –48.06[1] mas/yr |
| Parallax (π) | 15.28 ± 0.83[1] mas |
| Distance | 210 ± 10 ly (65 ± 4 pc) |
| Details | |
| Surface gravity (log g) | 2.34[5] cgs |
| Temperature | 4,370[5] K |
| Metallicity [Fe/H] | +0.01[5] dex |
| Rotational velocity (v sin i) | 10[6] km/s |
| Other designations | |
Kappa Leonis (κ Leonis, κ Leo) is a 4th-magnitude double star in the constellation Leo.[2] It was known as Minchir el-asad on Bode's large star atlas, Uranographia. This name is derived from the Arabic Minkhir al-Asad, "the Muzzle of (the constellation of) the Lion" for this star. The name is erroneously spelt as Al Minliar al Asad in the Yale Bright Star Catalogue.[7]
Kappa Leonis has apparent magnitude +4.46 and has a stellar classification of K2III. It is approximately 210 light years from Earth.
References
- 1 2 3 4 5 Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E.; Bastian, U.; Bernacca, P. L.; Crézé, M.; Donati, F.; Grenon, M.; Grewing, M.; Van Leeuwen, F.; Van Der Marel, H.; Mignard, F.; Murray, C. A.; Le Poole, R. S.; Schrijver, H.; Turon, C.; Arenou, F.; Froeschlé, M.; Petersen, C. S. (1997). "The HIPPARCOS Catalogue". Astronomy and Astrophysics 323 323. Bibcode:1997A&A...323L..49P.
- 1 2 3 4 "CCDM J09247+2611AB -- Double or multiple star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 2010-05-20.
- 1 2 Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "Ubvrijkl Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99. Bibcode:1966CoLPL...4...99J.
- ↑ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy and Astrophysics 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272.
- 1 2 3 McWilliam, Andrew (1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". The Astrophysical Journal Supplement Series 74: 1075. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527.
- ↑ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities: I. Main sequence single stars. II. Main sequence spectroscopic binaries and eclipsing systems". Contrib. Os. Astrofis. Asiago 239. Bibcode:1970CoAsi.239....1B.
- ↑ Hoffleit, D.; Warren Jr., W. H. (1991). "VizieR Correlated Data, HR 3731". Bright Star Catalogue, 5th Revised Ed. VizieR. Retrieved 2010-05-20.
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