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Tau Piscis Austrini

Tau Piscis Austrini
Diagram showing star positions and boundaries of the Piscis Austrinus constellation and its surroundings
Location of τ Piscis Austrini (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Piscis Austrinus
Right ascension 22h 10m 08.78048s[1]
Declination −32° 32′ 54.2687″[1]
Apparent magnitude (V) +4.945[2]
Characteristics
Spectral type F6 V[3]
U−B color index +0.031[2]
B−V color index +0.488[2]
Astrometry
Proper motion (μ) RA: +428.96[1] mas/yr
Dec.: +13.35[1] mas/yr
Parallax (π)54.71±0.28 mas[1]
Distance59.6 ± 0.3 ly
(18.28 ± 0.09 pc)
Absolute magnitude (MV)3.58[4]
Details
Mass1.34±0.13[5] M☉
Radius1.45±0.04[5] R☉
Luminosity2.82±0.09[5] L☉
Surface gravity (log g)4.11[6] cgs
Temperature6,324[4] K
Metallicity [Fe/H]−0.01[6] dex
Rotational velocity (v sin i)14.1±0.7[4] km/s
Age1.3[7] Gyr
Other designations
τ PsA, 15 Piscis Austrini, CPD−33° 6227, HD 210302, HIP 109422, HR 8447, SAO 213602[8]
Database references
SIMBADdata

Tau Piscis Austrini (τ Piscis Austrini) is a solitary,[9] yellow-white hued star in the southern constellation of Piscis Austrinus. It is visible to the naked eye with an apparent visual magnitude of +4.9.[2] Based upon an annual parallax shift of 54.71 mas as seen from the Earth,[1] the star is located 59.6 light years from the Sun.

This is an F-type main sequence star with a stellar classification of F6 V.[3] It is about 1.3[7] billion years old with a projected rotational velocity of 14[4] km/s and exhibits a low level of activity.[10] The star has an estimated 1.34 times the mass of the Sun and 1.45 times the Sun's radius.[5] It is radiating 2.82[5] times the solar luminosity from its photosphere at an effective temperature of 6,324 K.[4] This star is a candidate for hosting a debris disk, as it displayed an initial near infrared excess that faded with further observations.[11]

  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 GutierrezMoreno1966 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 Cite error: The named reference AmmlerVonEiff2012 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Bruntt2010 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Maldonado2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Holmberg2009 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 Meunier2012 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Ertel2016 was invoked but never defined (see the help page).
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