HD 47475

HD 47475
Observation data
Epoch J2000      Equinox J2000
Constellation Columba
Right ascension 06h 36m 51.27308s[1]
Declination −41° 33′ 25.6990″[1]
Apparent magnitude (V) 6.34±0.01[2]
Characteristics
Spectral type K0 II[3]
B−V color index +1.15[4]
Astrometry
Radial velocity (Rv)13.8±0.4[5] km/s
Proper motion (μ) RA: +1.235 mas/yr[1]
Dec.: +7.745 mas/yr[1]
Parallax (π)1.835 ± 0.0171 mas[1]
Distance1,780 ± 20 ly
(545 ± 5 pc)
Absolute magnitude (MV)−2.01[6]
Details
Mass4.0[7] M☉
Radius44.8[8] R☉
Luminosity1,035[1] L☉
Surface gravity (log g)1.66[7] cgs
Temperature4,845±122[8] K
Metallicity [Fe/H]−0.3[9] dex
Rotational velocity (v sin i)5.5±2[10] km/s
Other designations
111 G. Columbae, CD−41 2488, HD 47475, HIP 31063, HR 2445, SAO 218060
Database references
SIMBADdata

HD 47475 (HR 2445) is a solitary star located in the southern constellation Columba. With an apparent magnitude of 6.34, its barely visible to the naked eye under ideal conditions. The star is located 1,720 light years away from the Solar System, but is drifting away with a heliocentric radial velocity of 15.77 km/s.

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Corben1966 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference XHIP was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference starhorse2 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Lebre2006 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference De Medeiros2014 was invoked but never defined (see the help page).