32 Tauri

32 Tauri
Location of 32 Tauri (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 03h 56m 52.077s[1]
Declination +22° 28′ 40.70″[1]
Apparent magnitude (V) 5.62[2]
Characteristics
Spectral type F2IVs[3]
U−B color index +0.00[4]
B−V color index +0.345±0.004[2]
Astrometry
Radial velocity (Rv)+31.90[5] km/s
Proper motion (μ) RA: +70.674 mas/yr[1]
Dec.: −114.026 mas/yr[1]
Parallax (π)22.5957 ± 0.0385 mas[1]
Distance144.3 ± 0.2 ly
(44.26 ± 0.08 pc)
Absolute magnitude (MV)2.42[6]
Details
Mass2.04[7] M☉
Radius2.75[7] R☉
Luminosity15.4[7] L☉
Surface gravity (log g)3.87[7] cgs
Temperature6.901[7] K
Metallicity [Fe/H]−0.19[8] dex
Rotational velocity (v sin i)19.7[9] km/s
Age2.1[10] Gyr
Other designations
BD+22°605, FK5 2283, HD 24740, HIP 18471, HR 1218, SAO 76339, Ross 33.[11]
Database references
SIMBADdata

32 Tauri is the Flamsteed designation for a solitary[12] star in the zodiac constellation of Taurus. It has a visual magnitude of 5.64,[4] making it visible to the naked eye from suburban skies (according to the Bortle scale). The position of this star near the ecliptic plane means that it is subject to occultations by the Moon.[13] Parallax measurements put it at a distance of 144 light years from the Sun.[1] It is drifting further away with a radial velocity of +31.9[5] km/s, having come to within 88.9 light-years some 759,000 years ago.[2]

The spectrum of this star matches a stellar classification of F2IVs,[3] with the luminosity class of IV indicating that this star has reached the subgiant stage and is in the process of evolving into a giant star. It has twice the mass of the sun with nearly three times the Sun's radius, but 15 times the Sun's luminosity[7] and about half the Sun's age.[10] The abundance of elements other than hydrogen and helium is lower in this star than in the Sun.[10] The effective temperature of the star's outer atmosphere is 6901 K,[7] giving it the white-hued glow of an F-type star.[14]

  1. ^ a b c d e Cite error: The named reference GaiaEDR3 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray_et_al_2001 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MERMILLIOD was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference al32_11_759 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Paunzen2014 was invoked but never defined (see the help page).
  7. ^ a b c d e f g Cite error: The named reference TICv7 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Gáspár2016 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference deMedeiros2014 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference aa530_A138 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference aj41_956_80 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference csiro was invoked but never defined (see the help page).