{{Short description|A-type main-sequence star in the constellation Taurus}} {{Starbox begin}} {{Starbox image | image = {{Location mark |image=Taurus constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=90 Tauri |x=482|y=655 }} | caption = Location of 90 Tauri (circled in red) }} {{Starbox observe |epoch=J2000 |constell=Taurus |ra={{RA|04|38|09.46166}}<ref name=GaiaDR2>{{cite DR2|3306483944376792832}}</ref> |dec={{DEC|+12|30|38.9918}}<ref name=GaiaDR2/> |appmag_v=4.27<ref name=Ducati>{{cite journal|bibcode=2002yCat.2237....0D|title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system|journal=CDS/ADC Collection of Electronic Catalogues|volume=2237|author1=Ducati, J. R.|year=2002}}</ref> }} {{Starbox character |type=main sequence<ref name=Zorec2012>{{cite journal | last1=Zorec | first1=J. | last2=Royer | first2=F. | title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities | journal=Astronomy & Astrophysics | volume=537 | page=A120 | date=January 2012 | doi=10.1051/0004-6361/201117691 | bibcode=2012A&A...537A.120Z | arxiv=1201.2052 | s2cid=55586789 }}</ref> |class=A6 V<ref name=Royer>{{cite journal|bibcode=2007A&A...463..671R|doi=10.1051/0004-6361:20065224|arxiv=astro-ph/0610785|title=Rotational velocities of A-type stars|journal=Astronomy and Astrophysics|volume=463|issue=2|pages=671|year=2007|last1=Royer|first1=F.|last2=Zorec|first2=J.|last3=Gómez|first3=A. E.|s2cid=18475298}}</ref> |b-v=+0.12<ref name=EgUBV>{{cite journal|author1=Mermilliod, J.-C.|title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)|journal=Catalogue of Eggen's UBV Data|date=1986|bibcode= 1986EgUBV........0M}}</ref> |u-b=+0.11<ref name=EgUBV/> }} {{Starbox astrometry |radial_v={{Val|40.30|1}}<ref>{{cite journal|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|author=Gontcharov, G. A.|date=2006|journal=Astronomy Letters|volume=32|issue=11|pages=759–771|bibcode=2006AstL...32..759G|doi=10.1134/S1063773706110065|arxiv=1606.08053|s2cid=119231169}}</ref> |prop_mo_ra=102.40<ref name=HIP>{{cite journal|title=Validation of the new Hipparcos reduction|author=van Leeuwen, F.|display-authors=etal|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357|s2cid=18759600}}</ref> |prop_mo_dec=−15.78<ref name=HIP/> |parallax=22.6374 |p_error=0.3453 |parallax_footnote=<ref name=GaiaDR2/> |absmag_v=+1.18<ref name=Eggen1998/> }} {{Starbox detail |mass={{Val|2.09|0.11}}<ref name=AllendePrieto>{{cite journal|title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures|author1=Allende Prieto, C.|author2=Lambert, D. L.|journal=Astronomy and Astrophysics|volume=352|pages=555–562|date=1999|bibcode=1999A&A...352..555A|arxiv=astro-ph/9911002}}</ref> |radius=2.8<!-- 10^(0.44 ± 0.04) --><ref name=AllendePrieto/> |temperature=8,130<!-- 10^(3.91 ± 0.01) --><ref name=AllendePrieto/> |luminosity= |gravity={{Val|3.88|0.10}}<ref name=AllendePrieto/> |metal_fe= |rotational_velocity=89<ref name=Royer/> |age_gyr= }} {{Starbox catalog |names={{odlist |B=c Tau | F=90 Tau | BD=+12°618 | FK5=2342 | HD=29388 | HIP=21589 | HR=1473 | SAO=94044 }}<ref name=Simbad>{{cite simbad | title=90 Tau | access-date=2019-03-29 }}</ref> }} {{Starbox reference |Simbad=90+Tau }} {{Starbox end}} '''90 Tauri''' (90 Tau) is a star in the zodiac constellation of Taurus,<ref name=Simbad/> located 144 light-years away from the Sun.<ref name=GaiaDR2/> It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.27.<ref name=Ducati/> 90 Tauri is a member of the Hyades cluster and is listed as a double star.
This is an A-type main-sequence star with a stellar classification of A6 V.<ref name=Royer/> It has 2.1 times the mass of the Sun and 2.8 times the Sun's radius.<ref name=AllendePrieto/> An orbiting companion was announced in 2014. This is probably a spectral class K4V star with an estimated orbital period of at least 84 days. The primary is being orbited by a debris disk.<ref name=Marion2014/>
==References== {{Reflist|refs=
<ref name=Marion2014>{{citation | title=Searching for faint companions with VLTI/PIONIER. II. 92 main sequence stars from the Exozodi survey | display-authors=1 | last1=Marion | first1=L. | last2=Absil | first2=O. | last3=Ertel | first3=S. | last4=Le Bouquin | first4=J.-B. | last5=Augereau | first5=J.-C. | last6=Blind | first6=N. | last7=Defrère | first7=D. | last8=Lebreton | first8=J. | last9=Milli | first9=J. | journal=Astronomy & Astrophysics | postscript=. | volume=570 | id=A127 | pages=12 | date=October 2014 | doi=10.1051/0004-6361/201424780 | bibcode=2014A&A...570A.127M |arxiv = 1409.6105 | s2cid=8756486 }}</ref>
<ref name=Eggen1998>{{citation | title=The Age Range of Hyades Stars | last1=Eggen | first1=Olin J. | postscript=. | journal=The Astronomical Journal | volume=116 | issue=1 | pages=284–292 | date=July 1998 | doi=10.1086/300413 | bibcode=1998AJ....116..284E | doi-access=free }}</ref>
}}
{{Stars of Taurus}}
Category:A-type main-sequence stars Category:Hyades (star cluster) Category:Taurus (constellation) Tauri, c BD+12 0618 Tauri, 090 029388 021589 1473