82 Virginis
{{Short description|Star in the constellation Virgo}}
{{Starbox begin}}
{{Starbox observe|epoch=J2000|equinox=J2000|constell=Virgo|dec={{DEC|-08|42|10.73}}|ra={{RA|13|41|36.770}}|appmag_v=5.01}}
{{Starbox character|type=AGB{{cite journal |bibcode=1992AJ....104..275E |title=Asymptotic Giant Branch Stars Near the Sun |last1=Eggen |first1=Olin J. |journal=The Astronomical Journal |date=1992 |volume=104 |page=275 |doi=10.1086/116239 }}|class=M1III|appmag_1_passband=U|appmag_1=8.59|appmag_2_passband=B|appmag_2=6.64|appmag_4_passband=J|appmag_4=1.68|appmag_5_passband=H|appmag_5=0.88|appmag_6_passband=K|appmag_6=0.64|appmag_3_passband=G|appmag_3=4.149|b-v={{Val|1.623|0.009}}}}
{{Starbox astrometry|radial_v={{Val|-36.6|2}}|prop_mo_ra=-91.65|prop_mo_dec=40.28|pm_footnote={{Cite New HIP red.|66803}}|parallax=5.4376|p_error=0.2897|parallax_footnote=|absmag_v=−0.7{{cite journal |bibcode=2003A&A...401..997P |title=The Wilson-Bappu effect: A tool to determine stellar distances |last1=Pace |first1=G. |last2=Pasquini |first2=L. |last3=Ortolani |first3=S. |journal=Astronomy and Astrophysics |date=2003 |volume=401 |issue=3 |page=997 |doi=10.1051/0004-6361:20030163 |arxiv=astro-ph/0301637 }}}}
{{Starbox detail|mass=6.5{{cite journal |bibcode=2023ApJS..266...11B |title=New Generation Stellar Spectral Libraries in the Optical and Near-infrared. I. The Recalibrated UVES-POP Library for Stellar Population Synthesis |last1=Borisov |first1=Sviatoslav B. |last2=Chilingarian |first2=Igor V. |last3=Rubtsov |first3=Evgenii V. |last4=Ledoux |first4=Cédric |last5=Melo |first5=Claudio |last6=Grishin |first6=Kirill A. |last7=Katkov |first7=Ivan Yu. |last8=Goradzhanov |first8=Vladimir S. |last9=Afanasiev |first9=Anton V. |last10=Kasparova |first10=Anastasia V. |last11=Saburova |first11=Anna S. |journal=The Astrophysical Journal Supplement Series |date=2023 |volume=266 |issue=1 |page=11 |doi=10.3847/1538-4365/acc321 |doi-access=free |arxiv=2211.09130 }}|radius=54|luminosity=812{{cite journal |bibcode=2012MNRAS.427..343M |title=Fundamental parameters and infrared excesses of Hipparcos stars |last1=McDonald |first1=I. |last2=Zijlstra |first2=A. A. |last3=Boyer |first3=M. L. |journal=Monthly Notices of the Royal Astronomical Society |date=2012 |volume=427 |issue=1 |page=343 |doi=10.1111/j.1365-2966.2012.21873.x |doi-access=free |arxiv=1208.2037 }}|gravity=0.714|temperature=3,675|rotational_velocity={{Val|2.3|1}}|age_myr=50}}
{{Starbox catalog|names={{odlist|HD=119149|HIP=66803|HR=5150|IRAS=13389-0827|2MASS=J13413677-0842110|NSV=6390|SAO=139490|BD=-07 3674|GSC=05546-01582|IRC=-10293|TIC=743613|TYC=5546-1582-1|B=m Vir}}}}
{{Starbox reference|Simbad=82+Vir}}
{{Starbox end}}
82 Virginis, also known as m Virginis, is a star in the constellation Virgo. It is located {{convert|160|pc|ly|abbr=in|lk=on}} from Earth based on a parallax of {{val|6.249|0.2611|ul=mas}} from Gaia Data Release 3.{{Cite Gaia DR3|3618198617586733312}} It is a red giant, based on its spectral type of M1III.{{Cite simbad|title=82 Vir|access-date=2024-05-01}} Its apparent magnitude is 5.01.{{Cite journal |last1=Ghosh |first1=Supriyo |last2=Mondal |first2=Soumen |last3=Das |first3=Ramkrishna |last4=Khata |first4=Dhrimadri |date=2019-01-29 |title=Spectral Calibration of K$-$M Giants from medium resolution near-infrared HK-band spectra |journal=Monthly Notices of the Royal Astronomical Society |doi=10.1093/mnras/stz299 |doi-access=free |arxiv=1901.09170 |issn=0035-8711}}
Characteristics
82 Virginis is a red giant star, based on its spectral type of M1III, where M means that it is an M-type star and III is the luminosity class, meaning it is a giant star. The star is 54 times larger than the Sun. The effective temperature of the star is {{val|fmt=commas|3675|ul=K}}, which is 2,197 degrees cooler than the solar temperature of {{val|fmt=commas|5772|u=K}}. Its rotational velocity is 2.3 km/s.{{Cite journal |last1=Zamanov |first1=R. K. |last2=Bode |first2=M. F. |last3=Melo |first3=C. H. F. |last4=Stateva |first4=I. K. |last5=Bachev |first5=R. |last6=Gomboc |first6=A. |last7=Konstantinova-Antova |first7=R. |last8=Stoyanov |first8=K. A. |date=2008-10-11 |title=Rotational velocities of the giants in symbiotic stars: III. Evidence of fast rotation in S-type symbiotics |journal=Monthly Notices of the Royal Astronomical Society |volume=390 |issue=1 |pages=377–382 |doi=10.1111/j.1365-2966.2008.13751.x|doi-access=free |arxiv=0807.3817 |bibcode=2008MNRAS.390..377Z }} The angular diameter of the star, as measured from the CHARM survey, is of {{val|4.48|0.28|ul=mas}}.{{Cite journal |last1=Richichi |first1=A. |last2=Percheron |first2=I. |date=2002-05-01 |title=CHARM: A Catalog of High Angular Resolution Measurements |journal=Astronomy and Astrophysics |volume=386 |issue=2 |pages=492–503 |doi=10.1051/0004-6361:20020236 |bibcode=2002A&A...386..492R |issn=0004-6361|hdl=1887/7492 |url=https://www.aanda.org/10.1051/0004-6361:20020236/pdf |hdl-access=free }} At the current distance, this would lead to a radius of {{Solar radius calculator|type=AD|4.48|0.16|ul=|unit=y|link=y}}, somewhat larger than the radius derived by Gaia DR3.
The parallax of the star is measured at {{Val|5.4376|0.2897|ul=mas}} from Gaia DR3, translating to a distance of {{Convert|184|pc|ly|lk=on|abbr=off}} from Earth. The star is moving towards Earth at a velocity of 36.6 km/s. Its apparent magnitude is 5.01, making it visible to the naked eye.{{Efn|According to the Bortle scale}}
Notes
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