| 释义 |
- References
{{Starbox begin
| name=χ Leonis
}}{{Starbox observe
| constell = Leo
| epoch = J2000.0 (ICRS)
| ra = {{RA|11|05|01.02754}}
| dec = {{DEC|+07|20|09.6235}}
| appmag_v = 4.63[3]
}}{{Starbox character
| class = F2III-IVv[4]
| b-v = +0.33[3]
| u-b = +0.06[3]
| variable =
}}{{Starbox astrometry
| radial_v = +4.7[7]
| prop_mo_ra = −344.28
| prop_mo_dec = −47.65
| parallax = 34.49
| p_error = 0.20
| parallax_footnote =
| absmag_v = +2.31[11]
}}{{Starbox detail
| mass = 1.62[12]
| radius = 1.99[13]
| luminosity = 9.9[11]
| temperature = {{Val|7,022|80}}[12]
| metal_fe = +0.03[12]
| gravity = 4.02[12]
| rotational_velocity = {{Val|25|1}}[4]
| age_gyr = 1.40[12]
}}{{Starbox catalog
| names = χ Leo, 63 Leo, BD+08° 2455, FK5 418, HD 96097, HIP 54182, HR 4310, SAO 118648.[20]
}}{{Starbox reference
| Simbad = chi+Leo
}}{{Starbox end}}Chi Leonis, Latinized from χ Leonis, is a double star in the constellation Leo. It is visible to the naked eye with an apparent visual magnitude of 4.63.[3] The distance to this star, as determined using parallax measurements,[ is around 95 light years. It has an annual proper motion of 346 mas.[23]]This is most likely a binary star system.[24] The primary component is an evolved, F-type giant star with a stellar classification of F2III-IVv.[4] It has an estimated 162%[12] of the Sun's mass and nearly twice the Sun's radius.[13] The companion is a magnitude 11.0 star at an angular separation of 4.1″ along a position angle of 264°, as of 1990.[28] References1. ^1 2 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
2. ^1 {{citation | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institute of Washington, D.C. | bibcode=1953GCRV..C......0W | postscript=. }}
3. ^1 2 3 {{citation | display-authors=1 | last1=Royer | first1=F. | last2=Grenier | first2=S. | last3=Baylac | first3=M.-O. | last4=Gómez | first4=A. E. | last5=Zorec | first5=J. | title=Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i | journal=Astronomy and Astrophysics | volume=393 | pages=897–911 |date=October 2002 | doi=10.1051/0004-6361:20020943 | bibcode=2002A&A...393..897R | postscript=. | arxiv=astro-ph/0205255 }}
4. ^1 2 3 4 5 6 {{citation | display-authors=1 | last1=Casagrande | first1=L. | last2=Schönrich | first2=R. | last3=Asplund | first3=M. | last4=Cassisi | first4=S. | last5=Ramírez | first5=I. | last6=Meléndez | first6=J. | last7=Bensby | first7=T. | last8=Feltzing | first8=S. | title=New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey | journal=Astronomy & Astrophysics | volume=530 | issue=A138 | pages=21 | date=2011 | doi=10.1051/0004-6361/201016276 | bibcode=2011A&A...530A.138C | arxiv=1103.4651 | postscript=. }}
5. ^1 2 {{citation | title=Chromospheric Variability in Early F-Type Stars | last1=Rachford | first1=Brian L. | last2=Foight | first2=Dillon R. | journal=The Astrophysical Journal | volume=698 | issue=1 | pages=786–802 | date=June 2009 | doi=10.1088/0004-637X/698/1/786 | bibcode=2009ApJ...698..786R | arxiv=0904.1620 | postscript=. }}
6. ^1 {{cite journal | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | postscript=. }}
7. ^1 {{citation | last1=Lépine | first1=Sébastien | last2=Shara | first2=Michael M. | title=A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog) | journal=The Astronomical Journal | volume=129 | issue=3 | pages=1483–1522 | date=March 2005 | doi=10.1086/427854 | bibcode=2005AJ....129.1483L | arxiv=astro-ph/0412070 | postscript=. }}
8. ^1 {{citation | display-authors=1 | last1=Mason | first1=B. D. | last2=Wycoff | first2=G. L. | last3=Hartkopf | first3=W. I. | last4=Douglass | first4=G. G. | last5=Worley | first5=C. E. | title=The Washington Visual Double Star Catalog | year=2014 | bibcode=2001AJ....122.3466M | doi=10.1086/323920 | postscript=. | volume=122 | journal=The Astronomical Journal | pages=3466–3471}}
9. ^1 2 3 4 {{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | publisher=SIMBAD | date=1986 | bibcode=1986EgUBV........0M | postscript=. }}
10. ^1 {{cite simbad | title=* chi Leo | accessdate=2016-09-29 | postscript=. }}
[1][2][3][4][5][6][7][8][9][10]
}}{{Stars of Leo|state=collapsed}} 8 : F-type giants|Leo (constellation)|Bayer objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects|Durchmusterung objects |