Tau6 Eridani

For other star systems with this Bayer designation, see Tau Eridani.
τ6 Eridani
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Eridanus
Right ascension 03h 46m 50.88819s[1]
Declination −23° 14′ 59.0046″[1]
Apparent magnitude (V) 4.22[2]
Characteristics
Spectral type F5IV-V[3]
U−B color index −0.03[2]
B−V color index +0.43[2]
Astrometry
Radial velocity (Rv)8.0±0.8[4] km/s
Proper motion (μ) RA: −158.84[1] mas/yr
Dec.: −528.95[1] mas/yr
Parallax (π)56.73 ± 0.19 mas[1]
Distance57.5 ± 0.2 ly
(17.63 ± 0.06 pc)
Absolute magnitude (MV)2.98[5]
Details
Mass1.35[4] M☉
Radius1.80+0.08
−0.03[6] R☉
Luminosity5.47±0.06[6] L☉
Surface gravity (log g)4.21±0.13[4] cgs
Temperature6,584+47
−144[6] K
Metallicity [Fe/H]−0.03±0.11[4] dex
Rotational velocity (v sin i)16.25[7] km/s
Age2.0[4] Gyr
Other designations
τ6 Eri, 27 Eridani, CD−23°1565, FK5 140, GC 168827, HD 23754, HIP 17651, HR 1173, SAO 101600[8]
Database references
SIMBADdata

Tau6 Eridani, Latinized from τ6 Eridani, is a single[9] star in the equatorial constellation of Eridanus, located near the constellation border with Fornax. It has a yellow-white hue with an apparent visual magnitude of 4.22,[2] which is bright enough to be seen with the naked eye. Based upon parallax measurements, the distance to this star is around 57.5 light years.[1] It is drifting further away with a radial velocity of +8 km/s.[4]

The spectrum of Tau6 Eridani matches a stellar classification of F5IV-V,[3] indicating it is an F-type star that shows traits of both a main sequence star and a subgiant. It has an estimated 135%[4] of the Sun's mass and about 1.8 time the radius of the Sun.[6] The star is radiating 5.5[6] times the luminosity of the Sun at an effective temperature of 6,508 K,[4] and it does not display any surface magnetic activity.[7] The star has been examined for infrared excess emission that could indicate the presence of circumstellar matter, but none has been detected.[10]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Mermilliod1986 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ a b c d e f g h Cite error: The named reference Kordopatis2013 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Reiners2006 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference MartinezArnaiz2010 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Weinberger2015 was invoked but never defined (see the help page).