HD 177406

HD 177406
Location of HD 177406 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 19h 06m 55.60698s[1]
Declination −48° 17′ 56.9195″[1]
Apparent magnitude (V) 5.95±0.01[2]
Characteristics
Evolutionary stage main sequence star[1]
Spectral type A0 V[3]
U−B color index −0.02[4]
B−V color index −0.01[4]
Astrometry
Radial velocity (Rv)−6.2±1.6[5] km/s
Proper motion (μ) RA: +13.500 mas/yr[1]
Dec.: −12.738 mas/yr[1]
Parallax (π)8.8414 ± 0.0541 mas[1]
Distance369 ± 2 ly
(113.1 ± 0.7 pc)
Absolute magnitude (MV)+0.60[6]
Details
Mass2.64+0.43
−0.28[7] M☉
Radius2.55±0.13[8] R☉
Luminosity62.4+1.5
−1.4[1] L☉
Surface gravity (log g)4.00[9] cgs
Temperature10,275+229
−194[7] K
Metallicity [Fe/H]0.00[10] dex
Rotation27.2 d[11]
Rotational velocity (v sin i)50 - 100[12] km/s
Age286±9[13][10] Myr
Other designations
47 G. Telescopii[14], CD−48°12901, CPD−48°10045, FK5 3523, GC 26272, HD 177406, HIP 93862, HR 7223, SAO 229493[15]
Database references
SIMBADdata

HD 177406, also known as HR 7223 or rarely 47 G. Telescopii, is a solitary star[16] located in the southern constellation Telescopium. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.95.[2] Gaia DR3 parallax measurements imply a distance of 369 light years[1] and it is currently approaching the Solar System with a heliocentric radial velocity of −6.2 km/s.[5] At its current distance, HD 177406's brightness is diminished by 0.23 magnitudes due to interstellar dust[17] and it has an absolute magnitude of +0.60.[6]

HD 177406 has a stellar classification of A0 V,[3] indicating that it is an ordinary A-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.64 times the mass of the Sun[7] and a radius 2.55 times that of the Sun.[8] It radiates 62.4 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 10,275 K.[7] It has a solar metallicity at [Fe/H] = +0.00 and it is estimated to be 286 million years old,[13] having completed 58.66% of its main sequence lifetime.[1]

  1. ^ a b c d e f g h i Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1978 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Alexander1972 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Gontcharov2012B was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference oelkers2018 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference andersen1983 was invoked but never defined (see the help page).
  13. ^ a b Cite error: The named reference Gontcharov2012A was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).