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Tau Virginis information


τ Virginis
Location of τ Virginis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 14h 01m 38.79341s[1]
Declination +01° 32′ 40.3145″[1]
Apparent magnitude (V) 4.2777±0.0007[2]
Characteristics
Spectral type A2IV/V[3]
U−B color index +0.12[4]
B−V color index +0.11[4]
Astrometry
Radial velocity (Rv)−6.7±0.9[5] km/s
Proper motion (μ) RA: +17.49[1] mas/yr
Dec.: −21.27[1] mas/yr
Parallax (π)14.50 ± 0.18 mas[1]
Distance225 ± 3 ly
(69.0 ± 0.9 pc)
Absolute magnitude (MV)+0.5[6]
Details
Mass1.96[7] M
Radius1.6[8] R
Luminosity70[9] L
Surface gravity (log g)3.39[7] cgs
Temperature8,413±286[7] K
Metallicity [Fe/H]−0.19[10] dex
Rotational velocity (v sin i)186[11] km/s
Age724[7] Myr
Other designations
τ Vir, 93 Virginis, BD+02°2761, FK5 516, HD 122408, HIP 68520, HR 5264, SAO 120238[12]
Database references
SIMBADdata

Tau Virginis (τ Vir, τ Virginis) is a single[13] star in the zodiac constellation Virgo. With an apparent visual magnitude of 4.28,[2] it is faintly visible to the naked eye. The distance to Tau Virginis, based upon parallax measurements, is approximately 225 light years with a margin of error of ±3 light years.

This star has a stellar classification of A2IV/V,[3] which matches the spectrum of an A-type main sequence star mixed with spectral traits of a subgiant. It is about 700[7] million years old and is spinning rapidly with a projected rotational velocity of 186 km/s.[11] The star has nearly double[7] the mass of the Sun and about 160% of the Sun's radius.[8] It shines with 70[9] times the luminosity of the Sun and has an effective temperature of 8413 K in its outer atmosphere.[7]

Tau Virginis has multiple visual companions, listed below:[14]

Companion Visual
Magnitude
Angular
Separation
Position
Angle
Year
Measured
B 9.41 82.70″ 287° 2012
C 13.10 176.70″ 353° 2000
D 9.68 342.70″ 85° 2012
E 12.00 14.6″ 175° 2009
  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Adelman2001 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Mermilliod1986 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Blondel2006 was invoked but never defined (see the help page).
  7. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference cadars was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Morossi2002 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Royer2007 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).

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Tau Virginis

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Tau Virginis (τ Vir, τ Virginis) is a single star in the zodiac constellation Virgo. With an apparent visual magnitude of 4.28, it is faintly visible...

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vessel crewed by 25 men and 25 women aiming to reach the nearby star Beta Virginis. The ship is powered by a Bussard ramjet, which was proposed 10 years before...

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Virginis", Astronomy & Astrophysics, 287: 95–104, Bibcode:1994A&A...287...95M. Breger, M.; et al. (January 1999), "The delta Scuti star FG Virginis....

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Pulsating white dwarf

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Table 1. Cox, Arthur N. (1 March 2003). "A Pulsation Mechanism for GW Virginis Variables". The Astrophysical Journal. 585 (2): 975–982. Bibcode:2003ApJ...

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Type II Cepheid

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galaxies NGC 5128 and NGC 4258. Historically Type II Cepheids were called W Virginis variables, but are now divided into three subclasses based on the length...

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Supergiant

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also receive a supergiant luminosity class, most notably W Virginis variables such as W Virginis itself, stars that are executing a blue loop triggered by...

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Circumbinary planet

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significant amounts of dust. Announced in 2008, the eclipsing binary system HW Virginis, comprising a subdwarf B star and a red dwarf, was claimed to also host...

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Exoplanet naming convention

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unhelpful. They note that the discoverers of the two planets around HW Virginis tried to circumvent the naming problem by calling them "HW Vir 3" and "HW...

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Feast of the Immaculate Conception

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Virginis Immaculatae de praecepto ubique observetur - Commissi Nobis Divinitus sacrosancti apostolatus officii exigit ratio, ut gloriossimae Virginis...

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List of brightest natural objects in the sky

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Star Slightly variable 3.38 3.32 Delta Virginis Star 3.38 Epsilon Hydrae Quintuple star system 3.38 Zeta Virginis Binary star system Slightly variable 3...

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IAU designated constellations

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Lacaille, split from Argo Navis sails γ Velorum Virgo /ˈvɜːrɡoʊ/ Vir Virg Virginis /ˈvɜːrdʒɪnɪs/ ancient (Ptolemy) virgin or maiden Spica Volans /ˈvoʊlænz/...

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RV Tauri variable

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RV Tau variables is typically a few thousand times the sun, which places them at the upper end of the W Virginis instability strip. Therefore, RV Tau variables...

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List of directly imaged exoplanets

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Images Although listed in the table below, the identities of Candidate 1, FW Tau b, LkCa 15 b, LkCa 15 c, and HD 100546 b are disputed. They may not actually...

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51 Pegasi

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Star systems 47 Ursae Majoris 55 Cancri 70 Virginis PSR B1257+12 Tau Boötis Upsilon Andromedae Other articles Lists of exoplanets Solar analog Portal...

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List of fictional spacecraft

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in the novel Tau Zero to create enough speed for onboard time dilation to occur so the passengers can reach the far away Beta Virginis star within their...

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Habitable zone

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these planets supporting liquid water. One of the first discoveries was 70 Virginis b, a gas giant initially nicknamed "Goldilocks" due to it being neither...

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Solar analog

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S2CID 8886682. Beta Canum Venaticorum at SIMBAD - Ids - Bibliography - Image. 61 Virginis at SIMBAD - Ids - Bibliography - Image. Zeta Tucanae at SIMBAD - Ids -...

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List of multiplanetary systems

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"A Warm Jupiter-sized Planet Transiting the Pre-main-sequence Star V1298 Tau". The Astronomical Journal. 158 (2): 79. arXiv:1902.09670. Bibcode:2019AJ...

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List of Arabic star names

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Angle of the Barking Dog زاوية العواء Beta Virginis Zawiah aka Zaniah az-Zāwiyah The angle الزاوية Eta Virginis Zubenelgenubi az-Zubān ul-Janūbiy Southern...

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Coelum Stellatum Christianum

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surrounding Saint Benedict XV Aquila Catherine of Alexandria Sanctæ Catarinæ Virginis Sagitta Holy Lance Clavorum XPI Crucifixi XVI Delphinus Water jug of the...

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List of nearest stars and brown dwarfs

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equivocal evidence for a third in the habitable zone (2020) Ross 128 (FI Virginis) 11.0074 ±0.0011 Vir* 11h 47m 44.4s +00° 48′ 16″ M4.0Vn 0.168 11.13 13...

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