Rho Tauri

ρ Tauri
Location of ρ Tauri (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 04h 33m 50.91753s[1]
Declination +14° 50′ 39.9232″[1]
Apparent magnitude (V) 4.66[2]
Characteristics
Spectral type A8V[3]
U−B color index +0.09[2]
B−V color index +0.24[2]
Variable type δ Scuti[4]
Astrometry
Radial velocity (Rv)+39.6[5] km/s
Proper motion (μ) RA: 103.20[1] mas/yr
Dec.: −26.48[1] mas/yr
Parallax (π)20.61 ± 0.57 mas[1]
Distance158 ± 4 ly
(49 ± 1 pc)
Absolute magnitude (MV)+1.26[6]
Details
Mass1.88[6] or 2.09 ± 0.21[7] M☉
Luminosity1.39[7] L☉
Surface gravity (log g)4.02[7] cgs
Temperature7,640[7] K
Rotational velocity (v sin i)117[6] km/s
Other designations
ρ Tau, 86 Tau, BD+14 720, FK5 1125, HD 28910, HIP 21273, HR 1444, SAO 94007[8]
Database references
SIMBADdata

Rho Tauri (ρ Tau, ρ Tauri) is a star in the constellation Taurus and a member of the Hyades star cluster.[7]

Rho Tauri is a white A-type main sequence dwarf with a mean apparent magnitude of +4.66. It is approximately 158 light years from Earth. Classified as a Delta Scuti type[7] variable star, its brightness varies by 0.010 magnitudes over a period of 1.61 hours.[4]

It has 1.88 times the mass of the Sun, with a projected rotational velocity of 117 km/s and an estimated rotation period of 488.5 days.[6]

  • Hyades, with ρ Tau appearing blue, left of center, marked with a red arrow
    Hyades, with ρ Tau appearing blue, left of center, marked with a red arrow
  • A blue band light curve for Rho Tauri, adapted from Horan (1979)[9]
    A blue band light curve for Rho Tauri, adapted from Horan (1979)[9]
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  9. ^ Cite error: The named reference Horan was invoked but never defined (see the help page).