{{Short description|Red dwarf star in the constellation Boötes}} {{Starbox begin | name = LHS 2924 }} {{Starbox observe | epoch = J2000 | constell = [[Boötes]]<ref name=constellation/> | ra = {{RA|14|28|43.2275}}<ref name=GaiaDR3/> | dec = {{DEC|+33|10|39.259}}<ref name=GaiaDR3/> | appmag_v = 19.35<ref name="probst"/> }} {{Starbox character | class = M9Ve<ref name="SIMBAD"/> | appmag_1_passband = B | appmag_1 = 21.2<ref name="SIMBAD"/> | appmag_2_passband = R | appmag_2 = 17.8<ref name="SIMBAD"/> | appmag_3_passband = J | appmag_3 = 11.99<ref name="SIMBAD"/> | appmag_4_passband = H | appmag_4 = 11.225<ref name="SIMBAD"/> | appmag_5_passband = K | appmag_5 = 10.744<ref name="SIMBAD"/> | variable = }} {{Starbox astrometry | radial_v = −39.14<ref name="SIMBAD"/> | prop_mo_ra = −346.961 | prop_mo_dec = −710.986 | pm_footnote = <ref name=GaiaDR3/> | parallax = 91.1634 | p_error = 0.0994 | parallax_footnote = <ref name=GaiaDR3/> | absmag_v = 19.15 }} {{Starbox detail | source = <ref name="tsuji"/> | mass = 0.08 | radius = 0.107 | gravity = <!--Surface gravity (given as the base 10 logarithm expressed in cgs units)--> | luminosity = <!--Luminosity (in solar luminosities); prefer luminosity_bolometric or luminosity_visual--> | luminosity_bolometric = ~0.00021 | luminosity_visual = 0.0000016 | temperature = 2130 | metal = | rotation = | rotational_velocity = | age_gyr = }} {{Starbox catalog | names = {{odlist | 2MASS=J14284323+3310391 | GJ=3849 | LHS=2924 | LP=271-25 | LSPM=J1428+3310 | NLTT=37480 | SDSS=J142843.13+331036.8 | TIC=286963145 | WISEA=J142842.93+331031.7}}, FS 134<ref name=SIMBAD/> }} {{Starbox reference | Simbad = LP271-25 }} {{Starbox end}}
[[File:LHS 2924.png|thumb|left|Section of the night sky showing LHS 2924 as a tiny red dot in the middle of the yellow square]]
'''LHS 2924''', also commonly known as '''LP 271-25''', is an extremely small and dim [[ultra-cool dwarf|ultra-cool]] [[red dwarf]] located in the [[constellation]] of [[Boötes]], about 35.78 [[light-year]]s (10.97 [[Parsec|parsecs]]) from the Sun. It is very challenging to see LHS 2924 from Earth, because it is extremely faint, having an apparent magnitude in the [[visible spectrum]] of only +19.35. Due to its faintness, it was only discovered in 1983, and it was the least massive star known at the time of its discovery,<ref name="probst"/> being smaller and less luminous than [[VB 10]], which was before LHS 2924’s discovery the least massive and luminous star known. LHS 2924 is the primary standard for the [[Red dwarf|M9V]] spectral class.
==See also== * [[2MASS J0523-1403]] * [[EBLM J0555-57]]
== References == <references> <ref name=GaiaDR3>{{Cite Gaia DR3|1287312100751643776}}</ref>
<ref name=probst>{{Cite journal|last1=Probst|first1=R. G.|last2=Liebert|first2=J.|date=1983-11-01|title=LHS 2924 : A uniquely cool low-luminosity star with a peculiar energy distribution.|url=https://ui.adsabs.harvard.edu/abs/1983ApJ...274..245P|journal=The Astrophysical Journal|volume=274|pages=245–251|doi=10.1086/161442|bibcode=1983ApJ...274..245P |issn=0004-637X}}</ref>
<ref name=SIMBAD>{{Cite web|title=LP 271-25|url=http://simbad.u-strasbg.fr/simbad/sim-id|website=simbad.u-strasbg.fr}}</ref>
<ref name=constellation>{{cite constellation|LHS 2924}}</ref>
<ref name=tsuji>{{Cite journal|last1=Tsuji|first1=Takashi|last2=Nakajima|first2=Tadashi|date=2016-02-01|title=Near-infrared spectroscopy of M dwarfs. III. Carbon and oxygen abundances in late M dwarfs, including the dusty rapid rotator 2MASSI J1835379+325954†|journal=Publications of the Astronomical Society of Japan|volume=68|issue=1 |pages=13|doi=10.1093/pasj/psv119|arxiv=1511.04682 |bibcode=2016PASJ...68...13T |issn=0004-6264|doi-access=free}}</ref> </references>
{{Stars of Boötes}}
[[Category:M-type main-sequence stars]] [[Category:Boötes]] [[Category:Gliese and GJ objects|3849]]
{{reddwarf-star-stub}}