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Star in the constellation Ursa Major
15 Leonis Minoris is the
Flamsteed designation for a single
[13]
star in the northern
circumpolar constellation of
Ursa Major . It has an
apparent visual magnitude of 5.08,
[3] making it a fifth magnitude star that is visible to the naked eye. Based on
parallax measurements, it is located at a distance of 61.7
light years from the
Sun . The star has been examined for an
infrared excess , but none was detected.
[14]
This star has a
stellar classification of G0 IV-V
[4] with an age of about 9.3 billion years,
[11] which suggests that it is an older
G-type main sequence star that may be evolving into a
subgiant as the hydrogen at its core runs out. The estimated mass of the star is 15% greater than the
Sun's mass ,
[8] and it is larger in girth than the Sun by +52%.
[9] It is spinning with a
projected rotational velocity of 4 km/s.
[10] The star is radiating almost three
[2] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 5,859 K,
[4] giving it the yellow-hued glow of a
G-type star .
[15]
References
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Bibcode :
1979BICDS..17...38H .
^
a
b
c
d
e
f
g
Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018).
"Gaia Data Release 2: Summary of the contents and survey properties" .
Astronomy & Astrophysics . 616 . A1.
arXiv :
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Bibcode :
2018A&A...616A...1G .
doi :
10.1051/0004-6361/201833051 .
Gaia DR2 record for this source at
VizieR .
^
a
b
c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331,
arXiv :
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2012AstL...38..331A ,
doi :
10.1134/S1063773712050015 ,
S2CID
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^
a
b
c
d
e
f Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample",
The Astronomical Journal , 132 (1): 161–170,
arXiv :
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2006AJ....132..161G ,
doi :
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S2CID
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^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", SIMBAD Astronomical Database ,
Bibcode :
1986EgUBV........0M .
^ Nidever, David L.; et al. (August 2002), "Radial Velocities for 889 Late-Type Stars", The Astrophysical Journal Supplement Series , 141 (2): 503–522,
arXiv :
astro-ph/0112477 ,
Bibcode :
2002ApJS..141..503N ,
doi :
10.1086/340570 ,
S2CID
51814894 .
^ Luck, R. Earle; Heiter, Ulrike (2006), "Dwarfs in the Local Region", The Astronomical Journal , 131 (6): 3069–3092,
Bibcode :
2006AJ....131.3069L ,
doi :
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^
a
b Ramírez, I.; et al. (September 2012), "Lithium Abundances in nearby FGK Dwarf and Subgiant Stars: Internal Destruction, Galactic Chemical Evolution, and Exoplanets", The Astrophysical Journal , 756 (1): 46,
arXiv :
1207.0499 ,
Bibcode :
2012ApJ...756...46R ,
doi :
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S2CID
119199829 .
^
a
b Takeda, Genya; Ford, Eric B.; Sills, Alison; Rasio, Frederic A.; Fischer, Debra A.; Valenti, Jeff A. (2007), "Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog", The Astrophysical Journal Supplement Series , 168 (2): 297,
arXiv :
astro-ph/0607235 ,
Bibcode :
2007ApJS..168..297T ,
doi :
10.1086/509763 ,
S2CID
18775378 .
^
a
b Martínez-Arnáiz, R.; et al. (September 2010),
"Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter" (PDF) , Astronomy and Astrophysics , 520 : A79,
arXiv :
1002.4391 ,
Bibcode :
2010A&A...520A..79M ,
doi :
10.1051/0004-6361/200913725 ,
S2CID
43455849 , archived from
the original (PDF) on 2017-09-22, retrieved 2018-11-04 .
^
a
b Ballering, Nicholas P.; et al. (September 2013), "A Trend between Cold Debris Disk Temperature and Stellar Type: Implications for the Formation and Evolution of Wide-orbit Planets", The Astrophysical Journal , 775 (1): 14,
arXiv :
1308.2223 ,
Bibcode :
2013ApJ...775...55B ,
doi :
10.1088/0004-637X/775/1/55 ,
S2CID
119113700 , 55.
^
"* 15 LMi" ,
SIMBAD ,
Centre de données astronomiques de Strasbourg , retrieved 2016-07-19 .
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems",
Monthly Notices of the Royal Astronomical Society , 389 (2): 869–879,
arXiv :
0806.2878 ,
Bibcode :
2008MNRAS.389..869E ,
doi :
10.1111/j.1365-2966.2008.13596.x ,
S2CID
14878976 .
^ Moro-Martín, A.; et al. (March 2015), "Does the Presence of Planets Affect the Frequency and Properties of Extrasolar Kuiper Belts? Results from the Herschel Debris and Dunes Surveys", The Astrophysical Journal , 801 (2): 28,
arXiv :
1501.03813 ,
Bibcode :
2015ApJ...801..143M ,
doi :
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S2CID
55170390 , 143.
^
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