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{{Starbox begin
| name = 59 Leonis
}}{{Starbox observe
| epoch = J2000
| constell = Leo
| ra = {{RA|11|00|44.80142}}
| dec = {{DEC|+06|06|05.2093}}
| appmag_v = 4.98[3]
}}{{Starbox character
| class = A5 III[4] or A6 IV[5]
| b-v = {{Val|0.166|0.005}}[3]
| u-b =
| variable =
}}{{Starbox astrometry
| radial_v = {{Val|−11.7|1.3}}[7]
| prop_mo_ra = −52.73
| prop_mo_dec = −23.23
| parallax = 21.57
| p_error = 0.26
| parallax_footnote =
| absmag_v = 1.65[3]
}}{{Starbox detail
| source =
| mass = 1.73[12]
| radius =
| luminosity = 18.27[3]
| gravity = {{Val|4.15|0.14}}[12]
| temperature = {{Val|8277|281|fmt=commas}}[12]
| metal_fe =
| rotational_velocity = 82[16]
| age_myr = 332[12]
}}{{Starbox catalog
| names = {{odlist | B=c Leo | F=59 Leo | BD=+06° 2384 | FK5= | HD=95382 | HIP=53824 | HR=4294 | SAO=118615 | WDS=J11007+0606A }}[18]
}}{{Starbox reference
| Simbad = 59+Leo
}}{{Starbox end}}59 Leonis, or c Leonis, is a single,[19] white-hued star with an apparent magnitude in the southern part of the constellation of Leo. it is located on the Autumnal Equinox, north of 58 Leonis and south of Chi Leonis, well east of the bright star Regulus. It is a dim, naked eye star with an apparent visual magnitude of 4.98.[3] The annual parallax shift as seen from Earth's orbit is {{Val|21.57|0.26|ul=mas}},[ which provides a distance estimate of about 151 light years. The star is moving closer to the Sun with a heliocentric radial velocity of −12 km/s.[7]]Cowley et al. (1969) assigned 59 Leonis a stellar classification of A5 III,[4] matching the spectrum of an A-type giant star. However, Gray and Garrison (1989) found a class of A6 IV,[5] which would instead suggest it is a subgiant star. Hauck (1986) noted that the star is classified as a giant, but the colors match a dwarf star and it had been previously classified as F3 V.[25] It is an estimated 332[12] million years old with a high rate of spin, showing a projected rotational velocity of 82 km/s.[16] The star has around 1.73[12] times the mass of the Sun and is radiating 18[3] times the Sun's luminosity from its photosphere at an effective temperature of about 8,277 K.[12] References1. ^1 {{cite simbad | title=59 Leo | access-date=2018-03-01 }}
2. ^1 2 3 4 5 6 {{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=. }}
3. ^1 2 {{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 | arxiv=astro-ph/0205255 | postscript=. }}
4. ^1 2 {{citation | last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C. | title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project | journal=Astronomy & Astrophysics | volume=546 | id=A61 | pages=14 | date=October 2012 | doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D | arxiv=1208.3048 | postscript=. }}
5. ^1 2 3 4 5 6 7 {{citation | last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets | journal=The Astrophysical Journal | volume=804 | issue=2 | pages=146 | year=2015 | bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146 | arxiv=1501.03154 | postscript=. }}
6. ^1 2 {{citation | display-authors=1 | last1=Cowley | first1=A. | last2=Cowley | first2=C. | last3=Jaschek | first3=M. | last4=Jaschek | first4=C. | title=A study of the bright A stars. I. A catalogue of spectral classifications | journal=Astronomical Journal | volume=74 | pages=375–406 | date=April 1969 | doi=10.1086/110819 | bibcode=1969AJ.....74..375C }}
7. ^1 {{citation | title=The VAST Survey - III. The multiplicity of A-type stars within 75 pc | journal=Monthly Notices of the Royal Astronomical Society | last1=De Rosa | first1=R. J. | last2=Patience | first2=J. | last3=Wilson | first3=P. A. | last4=Schneider | first4=A. | last5=Wiktorowicz | first5=S. J. | last6=Vigan | first6=A. | last7=Marois | first7=C. | last8=Song | first8=I. | last9=MacIntosh | first9=B. | last10=Graham | first10=J. R. | last11=Doyon | first11=R. | last12=Bessell | first12=M. S. | last13=Thomas | first13=S. | last14=Lai | first14=O. | volume=437 | issue=2 | pages=1216 | year=2014 | bibcode=2014MNRAS.437.1216D | doi=10.1093/mnras/stt1932 | arxiv=1311.7141 | display-authors=1 | postscript=. }}
8. ^1 2 {{citation | title=The Late A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation | last1=Gray | first1=R. O. | last2=Garrison | first2=R. F. | journal=Astrophysical Journal Supplement | volume=70 | page=623 | date=July 1989 | postscript=. | doi=10.1086/191349 | bibcode=1989ApJS...70..623G }}
9. ^1 {{citation | title=Metallicism among A and F giant stars | last1=Hauck | first1=B. | journal=Astronomy and Astrophysics | volume=155 | pages=371−379 | date=February 1986 | bibcode=1986A&A...155..371H | postscript=. }}
[1][2][3][4][5][6][7][8][9]
}}External links- 59 Leonis in [https://web.archive.org/web/20150302211516/http://www.astrostudio.org/constellations.php?con=Leo Hipparcos stars in Leo]
{{Stars of Leo}} 8 : A-type giants|Leo (constellation)|Bayer objects|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |