109 Piscium

109 Piscium
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pisces
Right ascension 01h 44m 55.8251s[1]
Declination +20° 04′ 59.3363″[1]
Apparent magnitude (V) 6.27[2]
Characteristics
Spectral type G3 Va[3]
B−V color index 0.720±0.009[2]
Astrometry
Radial velocity (Rv)−45.53±0.09[4] km/s
Proper motion (μ) RA: −42.979±0.069[1] mas/yr
Dec.: −104.889±0.068[1] mas/yr
Parallax (π)30.16 ± 0.04 mas[1]
Distance108.1 ± 0.1 ly
(33.16 ± 0.04 pc)[1]
Absolute magnitude (MV)3.73[5]
Details
Mass1.11±0.03[6] M☉
Radius1.92±0.05[7] R☉
Luminosity2.89±0.08[7] L☉
Temperature5,600±75[8] K
Metallicity [Fe/H]0.15±0.04[4] dex
Rotation32.6±1.6 d[9]
Rotational velocity (v sin i)1.3[5] km/s
Age6.75±0.71[6] Gyr
Other designations
BD+19° 282, GJ 72, HD 10697, HIP 8159, HR 508[8]
Database references
SIMBADdata

109 Piscium is a yellow hued G-type main-sequence star located about 108 light-years away in the zodiac constellation of Pisces. It is near the lower limit of visibility to the naked eye with an apparent visual magnitude of 6.27.[2] The star is moving closer to the Earth with a heliocentric radial velocity of −45.5 km/s.[4] It has one known exoplanet.[10]

With a stellar classification of G3 Va,[3] this is a Sun-like star with a similar mass[6] but a 91%[7] larger radius. (Cowley and Bidelman (1979) had this classified as a subgiant star that is leaving the main sequence.[11]) It is 6.75[6] billion years old with a higher abundance of iron[4] and a low projected rotational velocity of 1.3 km/s.[5] The star is radiating 2.9[7] times the Sun's luminosity from its photosphere at an effective temperature of 5,442 K.[7]

  1. ^ a b c d e f Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference jofre2015 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference aaa361_614 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference apj725_1_721 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference Boyajian2013 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Simbad was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference mnras408_3_1666 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Keck was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference cowley1979 was invoked but never defined (see the help page).