30 Leonis Minoris
{{Short description|Star in the constellation Leo Minor}}
{{Starbox begin}}
{{Starbox image
| image =
{{Location mark
|image=Leo Minor constellation map.svg|alt=|float=center|width=280
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=30 Leonis Minoris
|x=433|y=487
}}
| caption = Location of 30 Leonis Minoris (circled)
}}
{{Starbox observe
| epoch = J2000
| constell = Leo Minor
}}
{{Starbox character
| type =
| class = kF0hF2mF2 or A9IIIa
| variable =
}}
{{Starbox astrometry
| parallax = 13.98
| p_error = 0.21
}}
{{Starbox detail
}}
{{Starbox catalog
| names = {{odlist | F=30 LMi | BD=+34°2128 | GC=14315 | HD=90277 | HIP=51056 | HR=4090 | SAO=62038 }}
}}
{{Starbox reference
| Simbad = 30+LMi
}}
{{Starbox end}}
30 Leonis Minoris is a single star in the northern constellation of Leo Minor. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.72. The distance to this star, as estimated from parallax measurements, is 233 light years. It is drifting away from the Earth with a heliocentric radial velocity of +13.7 km/s.
This object has been catalogued as an Am star and was given a stellar classification of kF0hF2mF2 by Abt and Morrell (1995). This notation indicates the calcium K line matches an F0 star, while the hydrogen and metal lines fit an F2 star. However, Gray et al. (2001) assigned it a class of A9IIIa, matching an A-type giant star.
30 Leonis Minoris has 2.3 times the mass of the Sun and 4.2 times the Sun's radius. It has a moderate rate of spin, showing a projected rotational velocity of 34 km/s. The star is radiating 58 times the Sun's luminosity from its photosphere at an effective temperature of 7,292 K.
References
{{reflist|refs=
{{cite simbad | title=30 LMi | access-date=2019-06-19 }}
| title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics
| last1=Van Leeuwen | first1=F.
| volume=474 | issue=2 | pages=653–664 | year=2007
| arxiv=0708.1752 | bibcode=2007A&A...474..653V
| doi=10.1051/0004-6361:20078357
| s2cid=18759600
}} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2051056 Vizier catalog entry]
| 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 | arxiv=1108.4971
| doi=10.1134/S1063773712050015
| s2cid=119257644 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=51056 Vizier catalog entry]
| title=Sloan Magnitudes for the Brightest Stars
| last1=Mallama | first1=A.
| journal=The Journal of the American Association of Variable Star Observers
| volume=42 | pages=443 | year=2014
| issue=2 | bibcode=2014JAVSO..42..443M
}}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/other/JAVSO/42.443/ugriz&HD=090277 Vizier catalog entry]
| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
| last1=Gontcharov| first1=G. A.
| journal=Astronomy Letters
| volume=32 | issue=11 | pages=759–771 | year=2006
| doi=10.1134/S1063773706110065
| bibcode=2006AstL...32..759G | arxiv=1606.08053 | s2cid=119231169}}
| title=Rotational velocities of A-type stars
| last1=Zorec | first1=J. | last2=Royer | first2=F.
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| volume=537 | pages=A120 | year=2012
| arxiv=1201.2052 | bibcode=2012A&A...537A.120Z
| doi=10.1051/0004-6361/201117691
| s2cid=55586789 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/537/A120/table1&HD=90277 Vizier catalog entry]
| title=Effective temperature scale and bolometric corrections from 2MASS photometry
| display-authors=1 | last1=Masana | first1=E.
| last2=Jordi | first2=C. | last3=Ribas | first3=I.
| journal=Astronomy and Astrophysics
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| bibcode=2006A&A...450..735M | arxiv=astro-ph/0601049
| doi=10.1051/0004-6361:20054021
| s2cid=15278668 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/450/735/table2&HIP=51056 Vizier catalog entry]
| title=Coudé-feed stellar spectral library – atmospheric parameters
| display-authors=1 | last1=Wu | first1=Yue
| last2=Singh | first2=H. P. | last3=Prugniel | first3=P.
| last4=Gupta | first4=R. | last5=Koleva | first5=M.
| journal=Astronomy & Astrophysics
| volume=525 | pages=A71 | year=2010
| bibcode=2011A&A...525A..71W | arxiv=1009.1491
| doi=10.1051/0004-6361/201015014 | s2cid=53480665 }}
| title=The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars
| last1=Abt | first1=Helmut A. | last2=Morrell | first2=Nidia I.
| journal=Astrophysical Journal Supplement
| volume=99 | pages=135 | year=1995
| bibcode=1995ApJS...99..135A | doi=10.1086/192182 | doi-access=free }}
| 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
| doi-access=free | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}
| display-authors=1 | last1=Gray | first1=R. O.
| last2=Napier | first2=M. G. | last3=Winkler | first3=L. I.
| title=The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars
| journal=The Astronomical Journal
| volume=121 | issue=4 | pages=2148–2158
| date=April 2001 | doi=10.1086/319956
| bibcode=2001AJ....121.2148G | doi-access=free }}
| title=A highly sensitive search for magnetic fields in B, A and F stars
| display-authors=1 | last1=Shorlin | first1=S. L. S.
| last2=Wade | first2=G. A. | last3=Donati | first3=J. -F.
| last4=Landstreet | first4=J. D. | last5=Petit | first5=P.
| last6=Sigut | first6=T. A. A. | last7=Strasser | first7=S.
| journal=Astronomy and Astrophysics
| volume=392 | pages=637–652 | date=September 2002
| issue=2 | doi=10.1051/0004-6361:20021192 | bibcode=2002A&A...392..637S | doi-access=free }}
}}
{{Stars of Leo Minor}}
{{DEFAULTSORT:30 Leonis Minoris}}