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Mu Tauri

Mu Tauri
Location of μ Tauri (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 04h 15m 32.05687s[1]
Declination 08° 53′ 32.4916″[1]
Apparent magnitude (V) 4.27[2]
Characteristics
Spectral type B3IV[3]
U−B color index −0.51[4]
B−V color index −0.05[4]
Astrometry
Radial velocity (Rv)+16.3±0.6[5] km/s
Proper motion (μ) RA: +20.881[1] mas/yr
Dec.: −22.789[1] mas/yr
Parallax (π)6.6651 ± 0.3319 mas[1]
Distance490 ± 20 ly
(150 ± 7 pc)
Absolute magnitude (MV)−1.45[2]
Details
Mass6.7[6] M☉
Luminosity462[2] L☉
Surface gravity (log g)3.75[7] cgs
Temperature16,980[7] K
Metallicity [Fe/H]−0.16[2] dex
Rotational velocity (v sin i)89[8] km/s
Age252[9] Myr
Other designations
μ Tau, 49 Tauri, BD+08°657, FK5 1118, GC 5134, HD 26912, HIP 116820, HR 1320, SAO 111696, GSC 00667-00839[10]
Database references
SIMBADdata

μ Tauri, Latinized as Mu Tauri, is a single[11] star in the equatorial constellation of Taurus. It has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.27.[2] The star is located approximately 490 light years distant from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +16 km/s.[5]

This object has a stellar classification of B3IV,[3] matching a B-type subgiant star. In the past this star was thought to have a variable radial velocity, but is now considered constant.[12] It is 252[9] million years old and is spinning with a projected rotational velocity of 89 km/s.[8] The star has 6.7[6] times the mass of the Sun and is radiating 462[2] times the Sun's luminosity from its photosphere at an effective temperature of 16,980 K.[7] It is emitting an infrared excess at a wavelength of 18 μm, making it a candidate host of a faint warm debris disk.[13]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference XHIP was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Lesh1968 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Mallama2014 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Soubiran2016 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Hoffleit1991 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Percy1977 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Ishihara2017 was invoked but never defined (see the help page).
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