Delta Fornacis

δ Fornacis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Fornax
Right ascension 03h 42m 14.90238s[1]
Declination −31° 56′ 18.0961″[1]
Apparent magnitude (V) 5.00[2]
Characteristics
Spectral type B5 III[3]
U−B color index −0.60[2]
B−V color index −0.16[2]
Astrometry
Radial velocity (Rv)+26.00[4] km/s
Proper motion (μ) RA: +4.942[1] mas/yr
Dec.: +13.326[1] mas/yr
Parallax (π)4.1125 ± 0.2114 mas[1]
Distance790 ± 40 ly
(240 ± 10 pc)
Absolute magnitude (MV)−2.07[5]
Details
Mass5.9±0.2[6] M☉
Radius6.0[7] R☉
Luminosity1,291[8] L☉
Temperature16,230±930[9] K
Rotational velocity (v sin i)185[10] km/s
Age63.1±16.1[6] Myr
Other designations
δ For, CD−32° 1430, FK5 133, HD 23227, HIP 17304, HR 1134, SAO 194467[11]
Database references
SIMBADdata

Delta Fornacis, Latinized from δ Fornacis, is a solitary,[12] blue-white hued star near the middle of the southern constellation of Fornax. With an apparent visual magnitude of 5.00,[2] it is faintly visible to the naked eye at night. The star has an annual parallax shift of 4.1 mas,[1] indicating it lies at a distance of approximately 790 light years from the Sun. It is drifting further away with a radial velocity of +26 km/s.[4]

The stellar classification of Delta Fornacis is B5 III,[3] matching an evolved B-type giant star. It has an angular diameter of 0.215±0.015 mas,[9] which, at the estimated distance of the star, yields a physical size of around 6 times the radius of the Sun.[7] Around 63 million years old,[6] the star is spinning rapidly with a projected rotational velocity of 185 km/s.[10] It has an estimated 5.9[6] times the Sun's mass and radiates 1,291[8] times the solar luminosity from its outer atmosphere at an effective temperature of 16,230 K.[9]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Johnson1999 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1982 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Kharchenko2007 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 Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference lang2006 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Zorec2009 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Abt2002 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).