# Mu Virginis

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F-type main sequence star in the constellation Virgo

Mu Virginis Location of μ Virginis (circled) Observation data Epoch J2000.0 Equinox J2000.0 Constellation Virgo Right ascension 14h 43m 03.62282s[1] Declination −05° 39′ 29.5327″[1] Apparent magnitude (V) 3.88[2][3] Characteristics Spectral type F2 V[4] U−B color index −0.04[2] B−V color index +0.39[2] Astrometry Radial velocity (Rv) 5.10±0.7[5] km/s Proper motion (μ) RA: +103.28[1] mas/yr Dec.: −318.63[1] mas/yr Parallax (π) 54.73±0.20 mas[1] Distance 59.6 ± 0.2 ly (18.27 ± 0.07 pc) Absolute magnitude (MV) 2.57[3] Details Radius 1.99[6] R☉ Luminosity 7.474[7] L☉ Surface gravity (log g) 4.21[4] cgs Temperature 6,751[4] K Metallicity [Fe/H] −0.05[4] dex Rotational velocity (v sin i) 47.0[8] km/s Age 1.5[3] Gyr Other designations Rijl al Awwa, μ Vir, 107 Vir, BD−05°3936, FK5 545, GJ 9491, HD 129502, HIP 71957, HR 5487, SAO 140090[9] Database references SIMBAD data

**Mu Virginis**, [Latinized](/source/Romanization_of_Greek) from μ Virginis, is a [star](/source/Star) in the [zodiac](/source/Zodiac) [constellation](/source/Constellation) of [Virgo](/source/Virgo_(constellation)). It was listed in the *Calendarium* of [Al Achsasi al Mouakket](/source/Al_Achsasi_al_Mouakket) as *rijl al-‘awwā’*, [Arabic](/source/Arabic) رجل العواء, meaning "The foot of the barking (dog)".[10] With an [apparent visual magnitude](/source/Apparent_visual_magnitude) of 3.88,[2] it is bright enough to be seen with the naked eye. The position of the star near the [celestial equator](/source/Celestial_equator) means it is visible from most of the [Earth](/source/Earth). Based upon [parallax](/source/Stellar_parallax) measurements, Mu Virginis is located some 59.6 [light-years](/source/Light-year) from the [Sun](/source/Sun).

Mu Virginis is an [F-type main-sequence star](/source/F-type_main-sequence_star) with a [stellar classification](/source/Stellar_classification) of F2 V,[4] although it does show some evidence of being a more [evolved star](/source/Stellar_evolution).[6] It has an [effective temperature](/source/Effective_temperature) of 6,751[4] K in its [outer atmosphere](/source/Stellar_atmosphere).[4] The estimated age of the star is 1.5 billion years, and it has a relatively high 47.0[8] km/s [projected rotational velocity](/source/Projected_rotational_velocity). A 1990 study of the star gave it a [giant star](/source/Giant_star) classification, and modeled it with 1.7 times the mass of the Sun, 2.1 times the Sun's [radius](/source/Radius), and shining with 9.8 times the [Sun's luminosity](/source/Sun's_luminosity).[11]

Past observations of this star show some indications of short-term [chromospheric](/source/Chromosphere) variability as well as radial velocity variations.[6] It has a candidate [common proper motion](/source/Common_proper_motion) companion at a projected separation of 770 [AU](/source/Astronomical_Unit). This object has a [J band](/source/J_band_(infrared)) magnitude of 10.72.[12]

## References

1. ^ [***a***](#cite_ref-van_Leeuwen2007_1-0) [***b***](#cite_ref-van_Leeuwen2007_1-1) [***c***](#cite_ref-van_Leeuwen2007_1-2) [***d***](#cite_ref-van_Leeuwen2007_1-3) [***e***](#cite_ref-van_Leeuwen2007_1-4) van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", *Astronomy and Astrophysics*, **474** (2): 653–664, [arXiv](/source/ArXiv_(identifier)):[0708.1752](https://arxiv.org/abs/0708.1752), [Bibcode](/source/Bibcode_(identifier)):[2007A&A...474..653V](https://ui.adsabs.harvard.edu/abs/2007A&A...474..653V), [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20078357](https://doi.org/10.1051%2F0004-6361%3A20078357), [S2CID](/source/S2CID_(identifier)) [18759600](https://api.semanticscholar.org/CorpusID:18759600).

1. ^ [***a***](#cite_ref-Mermilliod1986_2-0) [***b***](#cite_ref-Mermilliod1986_2-1) [***c***](#cite_ref-Mermilliod1986_2-2) [***d***](#cite_ref-Mermilliod1986_2-3) Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", *Catalogue of Eggen's UBV Data*, [SIMBAD](/source/SIMBAD), [Bibcode](/source/Bibcode_(identifier)):[1986EgUBV........0M](https://ui.adsabs.harvard.edu/abs/1986EgUBV........0M).

1. ^ [***a***](#cite_ref-cgssn09_3-0) [***b***](#cite_ref-cgssn09_3-1) [***c***](#cite_ref-cgssn09_3-2) Holmberg, J.; et al. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", *Astronomy and Astrophysics*, **501** (3): 941–947, [arXiv](/source/ArXiv_(identifier)):[0811.3982](https://arxiv.org/abs/0811.3982), [Bibcode](/source/Bibcode_(identifier)):[2009A&A...501..941H](https://ui.adsabs.harvard.edu/abs/2009A&A...501..941H), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/200811191](https://doi.org/10.1051%2F0004-6361%2F200811191), [S2CID](/source/S2CID_(identifier)) [118577511](https://api.semanticscholar.org/CorpusID:118577511).

1. ^ [***a***](#cite_ref-Gray2006_4-0) [***b***](#cite_ref-Gray2006_4-1) [***c***](#cite_ref-Gray2006_4-2) [***d***](#cite_ref-Gray2006_4-3) [***e***](#cite_ref-Gray2006_4-4) [***f***](#cite_ref-Gray2006_4-5) [***g***](#cite_ref-Gray2006_4-6) 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](/source/The_Astronomical_Journal)*, **132** (1): 161–170, [arXiv](/source/ArXiv_(identifier)):[astro-ph/0603770](https://arxiv.org/abs/astro-ph/0603770), [Bibcode](/source/Bibcode_(identifier)):[2006AJ....132..161G](https://ui.adsabs.harvard.edu/abs/2006AJ....132..161G), [doi](/source/Doi_(identifier)):[10.1086/504637](https://doi.org/10.1086%2F504637), [S2CID](/source/S2CID_(identifier)) [119476992](https://api.semanticscholar.org/CorpusID:119476992).

1. **[^](#cite_ref-Gontcharov2006_5-0)** Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system", *Astronomy Letters*, **32** (11): 759–771, [arXiv](/source/ArXiv_(identifier)):[1606.08053](https://arxiv.org/abs/1606.08053), [Bibcode](/source/Bibcode_(identifier)):[2006AstL...32..759G](https://ui.adsabs.harvard.edu/abs/2006AstL...32..759G), [doi](/source/Doi_(identifier)):[10.1134/S1063773706110065](https://doi.org/10.1134%2FS1063773706110065), [S2CID](/source/S2CID_(identifier)) [119231169](https://api.semanticscholar.org/CorpusID:119231169).

1. ^ [***a***](#cite_ref-Rachford2009_6-0) [***b***](#cite_ref-Rachford2009_6-1) [***c***](#cite_ref-Rachford2009_6-2) Rachford, Brian L.; Foight, Dillon R. (June 2009), "Chromospheric Variability in Early F-Type Stars", *The Astrophysical Journal*, **698** (1): 786–802, [arXiv](/source/ArXiv_(identifier)):[0904.1620](https://arxiv.org/abs/0904.1620), [Bibcode](/source/Bibcode_(identifier)):[2009ApJ...698..786R](https://ui.adsabs.harvard.edu/abs/2009ApJ...698..786R), [doi](/source/Doi_(identifier)):[10.1088/0004-637X/698/1/786](https://doi.org/10.1088%2F0004-637X%2F698%2F1%2F786), [S2CID](/source/S2CID_(identifier)) [693296](https://api.semanticscholar.org/CorpusID:693296).

1. **[^](#cite_ref-moro-martin_7-0)** Moro-Martín, A.; et al. (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): 143, [arXiv](/source/ArXiv_(identifier)):[1501.03813](https://arxiv.org/abs/1501.03813), [Bibcode](/source/Bibcode_(identifier)):[2015ApJ...801..143M](https://ui.adsabs.harvard.edu/abs/2015ApJ...801..143M), [doi](/source/Doi_(identifier)):[10.1088/0004-637X/801/2/143](https://doi.org/10.1088%2F0004-637X%2F801%2F2%2F143), [S2CID](/source/S2CID_(identifier)) [55170390](https://api.semanticscholar.org/CorpusID:55170390).

1. ^ [***a***](#cite_ref-aaa493_3_1099_8-0) [***b***](#cite_ref-aaa493_3_1099_8-1) Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), ["Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo"](https://web.archive.org/web/20170922162905/https://goedoc.uni-goettingen.de/bitstream/handle/1/9690/aa10377-08.pdf?sequence=2) (PDF), *Astronomy and Astrophysics*, **493** (3): 1099–1107, [Bibcode](/source/Bibcode_(identifier)):[2009A&A...493.1099S](https://ui.adsabs.harvard.edu/abs/2009A&A...493.1099S), [doi](/source/Doi_(identifier)):[10.1051/0004-6361:200810377](https://doi.org/10.1051%2F0004-6361%3A200810377), archived from [the original](http://goedoc.uni-goettingen.de/goescholar/bitstream/handle/1/9690/aa10377-08.pdf?sequence=2) (PDF) on 2017-09-22, retrieved 2018-11-04

1. **[^](#cite_ref-SIMBAD_9-0)** ["* mu. Vir"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+mu.+Vir). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2016-09-08.{{[cite web](https://en.wikipedia.org/wiki/Template:Cite_web)}}: CS1 maint: postscript ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_postscript))

1. **[^](#cite_ref-Allen1963_10-0)** [Allen, R. H.](/source/Richard_Hinckley_Allen) (1963), *[Star Names: Their Lore and Meaning](/source/Star_Names%3A_Their_Lore_and_Meaning)* (Reprint ed.), New York, NY: Dover Publications Inc., pp. [473](https://archive.org/details/starnamestheirlo00alle/page/473), [ISBN](/source/ISBN_(identifier)) [0-486-21079-0](https://en.wikipedia.org/wiki/Special:BookSources/0-486-21079-0) {{[citation](https://en.wikipedia.org/wiki/Template:Citation)}}: ISBN / Date incompatibility ([help](https://en.wikipedia.org/wiki/Help:CS1_errors#invalid_isbn_date))

1. **[^](#cite_ref-aass85_3_1015_11-0)** Malagnini, M. L.; Morossi, C. (November 1990), "Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars", *Astronomy and Astrophysics Supplement Series*, **85** (3): 1015–1019, [Bibcode](/source/Bibcode_(identifier)):[1990A&AS...85.1015M](https://ui.adsabs.harvard.edu/abs/1990A&AS...85.1015M).

1. **[^](#cite_ref-Chini2014_12-0)** Chini, R.; et al. (January 2014), "New visual companions of solar-type stars within 25 pc", *Monthly Notices of the Royal Astronomical Society*, **437** (1): 879–886, [arXiv](/source/ArXiv_(identifier)):[1310.2684](https://arxiv.org/abs/1310.2684), [Bibcode](/source/Bibcode_(identifier)):[2014MNRAS.437..879C](https://ui.adsabs.harvard.edu/abs/2014MNRAS.437..879C), [doi](/source/Doi_(identifier)):[10.1093/mnras/stt1953](https://doi.org/10.1093%2Fmnras%2Fstt1953), [S2CID](/source/S2CID_(identifier)) [118717758](https://api.semanticscholar.org/CorpusID:118717758).

v t e Constellation of Virgo List of stars in Virgo North Polar Spur Virgo in Chinese astronomy Virgo Stellar Stream Stars Bayer α (Spica) β (Zavijava) γ (Porrima) δ (Minelauva) ε (Vindemiatrix) ζ (Heze) η (Zaniah) θ ι (Syrma) κ (Kang) λ (Khambalia) μ ν ξ ο π ρ σ τ υ φ (Elgafar) χ ψ ω Flamsteed 4 (A1) 6 (A2) 7 (b) 10 11 12 13 14 16 (c) 17 20 21 (q) 25 (f) 27 28 31 (d1) 32 (d2) 33 34 35 37 38 39 41 44 (k) 46 48 49 50 53 54 55 56 57 58 59 (e) 61 62 63 64 65 66 68 (i) 69 70 71 72 73 74 (Apamvatsa) 75 76 (h) 77 78 (o) 80 81 82 (m) 83 84 85 86 87 88 89 90 (p) 92 94 95 96 97 103 104 106 108 109 (Maenalus) 110 1 Ser (M Ser) 2 Ser Variable R S W RT SS SW XX AG AH BH CS CU EQ ET FG GL GW HW NY QS HR 4587 5384 HD 102195 (Flegetonte) 106252 106315 106515 107148 109271 114783 125612 126614 130322 (Mönch) 133600 Other BD+03 2562 Gliese 486 (Gar) Gliese 514 Gliese 536 HAT-P-26 (Guahayona) HAT-P-27 HE 1219−0312 K2-19 K2-229 PSR B1257+12 (Lich) Qatar-2 Ross 128 Ross 458 SDSS J1228+1040 SDSS J1229+1122 ULAS J133553.45+113005.2 WASP-16 WASP-24 WASP-37 WASP-39 (Malmok) WASP-54 WASP-55 WASP-107 WD 1145+017 Wolf 424 Wolf 489 Exoplanets 38 Virginis b 61 Virginis b c 70 Virginis b Gliese 486 b (Su) Gliese 504 b Gliese 536 b HD 102195 b (Lete) HD 106252 b HD 107148 b HD 114783 b HD 125612 b c d HD 126614 Ab HD 130322 b (Eiger) HR 5183 b K2-137b K2-229b KELT-21b PSR B1257+12 A (Draugr) B (Poltergeist) C (Phobetor) Ross 128 b WASP-16b WASP-24b WASP-39b (Bocaprins) WASP-85 Ab WASP-107b WD 1145+017 b Star clusters HVGC-1 Koposov 1 NGC 5634 Nebulae Abell 36 Galaxies Messier 49 58 59 60 61 84 86 87 89 90 104 (Sombrero Galaxy) NGC 3776 3817 3818 3833 3843 3848 3852 3914 3915 4030 4045 4123 4129 4168 4178 4179 4197 4200 4206 4207 4216 4246 4249 4252 4260 4261 4267 4273 4277 4294 4296 4297 4299 4301 4305 4306 4307 4309 4313 4316 4318 4320 4324 4325 4326 4330 4333 4343 4352 4365 4378 4380 4388 4402 4410 4411 B 4415 4417 4420 4424 4425 4429 4436 4440 4451 4452 4453 4454 4457 4458 4461 4464 4466 4467 4469 4470 4476 4478 4482 4483 4486B 4487 4488 4491 4492 4496 4497 4503 4504 4517 4519 4522 4526 4527 4528 4531 4535 4536 4544 4546 4550 4551 4564 4567 4568 4570 4578 4580 4586 4587 4593 4596 4598 4606 4607 4608 4612 4620 4623 4626 4630 4632 4636 4637 4638 4639 4643 4647 4653 4654 4658 4660 4665 4666 4674 4680 4688 4691 4694 4697 4698 4699 4700 4701 4708 4713 4731 4733 4734 4746 4753 4754 4762 4772 4775 4777 4780 4781 4790 4818 4825 4845 4856 4866 4900 4902 4918 4939 4941 4958 4981 4984 4991 4995 4999 5006 5010 5018 5020 5030 5050 5054 5068 5084 5087 5162 5170 5177 5185 5221 5230 5235 5247 5252 5300 5331 5334 5335 5343 5363 5364 5374 5384 5442 5468 5470 5493 5501 5506 5555 5566 5575 5584 5619 5674 5668 5679 5701 5705 5713 5719 5746 5750 5765 5774 5775 5806 5838 5846 5850 5854 Numbered Virgo I Other 3C 273 3C 279 3C 287.1 3C 298 4C 03.24 A1689B11 A1689-zD1 Abell 1650 BCG Abell 1835 BCG Abell 1835 IR1916 Abell 1942 BCG Arp 240 (NGC 5257 and NGC 5258) Arp 271 (NGC 5426 and NGC 5427) BRI 1335-0417 CGCG 044-046 Eyes Galaxies GR 8 Hedgehog IC 719 IC 1011 IC 1101 IC 3078 IC 3418 IC 3430 IC 3447 IC 3583 IRAS 12112+0305 IRAS 13218+0552 LBQS 1429-008 LEDA 896325 LEDA 1245565 M59-UCD3 M60-UCD1 PG 1216+069 PKS 1148−001 PKS 1302−102 PKS 1335−127 PKS 1402+044 PKS 1502+036 POX 186 Q1208+1011 RX J1242−11 SDSS J121143.17+080108.3 SDSS J1254+0846 SDSS J150904.22+043441.8 Speca TXS 1321+045 UGC 6665 UGC 8153 WISEA J142040.84+065059.8 ZwCl 5247 BCG Galaxy clusters Abell 1689 Abell 1835 Abell 2029 Abell 2147 Markarian's Chain RX J1347.5−1145 U1.11 Virgo Cluster Wild's Triplet Astronomical events GRB 250314A SN 1961I SN 1990N SN 1994D SN 2002cx SN 2007bi SN 2020fqv SN 2020jfo Category

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Adapted from the Wikipedia article [Mu Virginis](https://en.wikipedia.org/wiki/Mu_Virginis) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Mu_Virginis?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.