14 Eridani

14 Eridani
Observation data
Epoch J2000      Equinox
Constellation Eridanus
Right ascension 03h 16m 35.75439s[1]
Declination −09° 09′ 16.3318″[1]
Apparent magnitude (V) 6.143[2]
Characteristics
Spectral type F5 V Fe−0.7 CH−0.5[3]
B−V color index 0.399[2]
Astrometry
Radial velocity (Rv)−5.3±2.9[4] km/s
Proper motion (μ) RA: +8.057[1] mas/yr
Dec.: +22.871[1] mas/yr
Parallax (π)26.9856 ± 0.2356 mas[1]
Distance121 ± 1 ly
(37.1 ± 0.3 pc)
Absolute magnitude (MV)3.47[5]
Details
Mass1.31[6] M☉
Radius1.48+0.9
−0.8[1] R☉
Luminosity3.87±0.04[1] L☉
Surface gravity (log g)4.34±0.14[6] cgs
Temperature6,719±228[6] K
Metallicity [Fe/H]−0.10[7] dex
Age1.391[6] Gyr
Other designations
14 Eri, BD−09° 627, GC 3918, HD 20395, HIP 15244, HR 988, SAO 130395, PPM 185595, WDS J03158-0849B[8]
Database references
SIMBADdata

14 Eridani is a star in the equatorial Eridanus constellation. It has an apparent visual magnitude of 6.143[2] and is moving closer to the Sun with a radial velocity of around −5 km/s.[4] The measured annual parallax shift is 29.26 mas,[1] which provides an estimated distance of about 121 light years. Proper motion studies indicate that this is an astrometric binary.[9][10]

The visible component has a stellar classification of F5 V Fe−0.7 CH−0.5,[3] which indicates it has the spectrum of an F-type main-sequence star with mild underabundances of iron and methylidyne. It is 1.4[6] billion years old with 1.3[6] times the mass of the Sun and 1.5[1] times the Sun's radius. The star is radiating 3.87[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,719 K.[6] The system has been detected as a source of X-ray emission.[11]

  1. ^ a b c d e f g h i j Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference tycho2 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 Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  8. ^ "14 Eri". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-27.
  9. ^ Cite error: The named reference Makarov2005 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Frankowski2007 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Huensch1998 was invoked but never defined (see the help page).