HD 47667

HD 47667
Observation data
Epoch J2000      Equinox J2000
Constellation Canis Major
Right ascension 06h 39m 16.71946s[1]
Declination −14° 08′ 44.7468″[1]
Apparent magnitude (V) 4.832[2]
Characteristics
Spectral type K2+ IIIa CN0.5 Ca1[3]
B−V color index 1.459±0.072[4]
Astrometry
Radial velocity (Rv)+28.9±0.4[4] km/s
Proper motion (μ) RA: +5.11[1] mas/yr
Dec.: −6.65[1] mas/yr
Parallax (π)3.4781 ± 0.1727 mas[5]
Distance940 ± 50 ly
(290 ± 10 pc)
Absolute magnitude (MV)−2.56[4]
Details
Mass7.4±0.7[6] M☉
Radius28[7] R☉
Luminosity2,317[4] L☉
Surface gravity (log g)1.63[2] cgs
Temperature4,200[2] K
Metallicity [Fe/H]−0.21[2] dex
Age40.1±11.9[6] Myr
Other designations
BD−14° 1525, FK5 2515, HD 47667, HIP 31827, HR 2450, SAO 151751[8]
Database references
SIMBADdata

HD 47667 is a single[9] star in the southern constellation of Canis Major. It is visible to the naked eye with an apparent visual magnitude of 4.832.[2] The estimated distance to this star, based upon an annual parallax shift of 3.30±0.35 mas,[1] is roughly 1,000 light years. It is moving further away with a heliocentric radial velocity of +29 km/s.[4] The star made its closest approach to the Sun some 8.7 million years ago at a separation of around 362 ly (111.12 pc).[4]

Roughly 40 million years old,[6] this is an evolved K-type giant star with a stellar classification of K2+ IIIa CN0.5 Ca1.[3] The suffix notation indicates overabundances of calcium and the cyanide molecule have been found in the spectrum of the stellar atmosphere. The star has 7.4[6] times the mass of the Sun and has expanded to 28[7] times the Sun's radius. It is radiating 2,317[4] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,200 K.[2]

  1. ^ a b c d e 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 Soubiran2010 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference perkins1989 was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference dr2 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 Cadars2001 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).