HD 117618

HD 117618 / Dofida
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 13h 32m 25.55543s[1]
Declination –47° 16′ 16.9091″[1]
Apparent magnitude (V) 7.17[2]
Characteristics
Spectral type G0 V[3]
B−V color index 0.603±0.010[2]
Astrometry
Radial velocity (Rv)+1.60±0.76[2] km/s
Proper motion (μ) RA: +24.87[1] mas/yr
Dec.: −125.01[1] mas/yr
Parallax (π)26.34 ± 0.60 mas[1]
Distance124 ± 3 ly
(38.0 ± 0.9 pc)
Absolute magnitude (MV)4.27[2]
Details[4]
Mass1.10±0.02 M☉
Radius1.17±0.04 R☉
Luminosity1.6±0.1 L☉
Surface gravity (log g)4.34±0.03 cgs
Temperature6,019±50 K
Metallicity [Fe/H]+0.03±0.01[5] dex
Rotational velocity (v sin i)3.67[6] km/s
Age4.0±1.3 Gyr
Other designations
Dofida, CD−46° 8708, GC 18290, HD 117618, HIP 66047, SAO 224228[7]
Database references
SIMBADdata

HD 117618, named Dofida by the IAU,[8] is a single,[9] yellow-hued star in the southern constellation of Centaurus. With an apparent visual magnitude of 7.17,[2] it is too faint to be visible to the naked eyes of a typical observer. The distance to this star, as determined from its annual parallax shift of 26.34±0.60 mas as seen from Earth's orbit,[1] is about 124 light years. It is moving further away with a heliocentric radial velocity of around +1.6 km/s.[2]

This star is similar to the Sun, being a G-type main-sequence star with a stellar classification of G0 V.[3] It is about 10% more massive and 17% larger than the Sun, with an estimated age of roughly four billion years[4] and a projected rotational velocity of 3.67 km/s.[6] The star is radiating 1.6 times the Sun's luminosity from its photosphere at an effective temperature of 6,019 K.[4]

  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 e f Cite error: The named reference Anderson2012 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 Cite error: The named reference Bonfanti2016 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Adibekyan2016 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Delgado_Mena2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference IAU Approved was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Raghavan2006 was invoked but never defined (see the help page).