HD 174430

HD 174430
Location of HD 174430 and κ Tel (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 18h 53m 12.00295s[1]
Declination −51° 55′ 53.1748″[1]
Apparent magnitude (V) 6.29±0.01[2]
Characteristics
Spectral type B3/5 III[3]
B−V color index −0.09[4]
Astrometry
Radial velocity (Rv)−23.0±4.3[5] km/s
Proper motion (μ) RA: +2.869 mas/yr[1]
Dec.: −12.640 mas/yr[1]
Parallax (π)2.8731 ± 0.0531 mas[1]
Distance1,140 ± 20 ly
(348 ± 6 pc)
Absolute magnitude (MV)−1.80[6]
Details
Mass4.05[7] M☉
Radius5.72±0.29[8] R☉
Luminosity696[9] L☉
Surface gravity (log g)3.56[7] cgs
Temperature14,824[10] K
Metallicity [Fe/H]−0.01[7] dex
Age76[11] Myr
Other designations
32 G. Telescopii[12], CD−52°8861, CPD−52°11273, GC 25871, HD 174430, HIP 92687, HR 7093, SAO 245783[13]
Database references
SIMBADdata

HD 174430, also designated as HR 7093 or rarely 32 G. Telescopii, is a solitary blue-hued star located in the southern constellation Telescopium near Kappa Telescopii. It has an apparent magnitude of 6.29,[2] placing it near the limit for naked eye, even under ideal conditions. The object is located relatively far at a distance of 1,140 light-years based on Gaia DR3 parallax measurements,[1] but it is drifitng closer with a heliocentric radial velocity of −23 km/s.[5] At its current distance, HD 174430's brightness is diminished by 0.32 magnitudes due to interstellar extinction[14] and it has an absolute magnitude of −1.80.[6]

HD 174430 has a stellar classification of B3/5 III,[3] indicating that it is an evolved B-type star with the characteristics of a B3 and B5 giant star. It has also been given a less evolved class of B6 V.[15] It has 4.05 times the mass of the Sun[7] and 5.72 times the radius of the Sun.[8] It radiates 696 times the luminosity of the Sun[9] from its photosphere at an effective temperature of 14,824 K.[10] HD 174430 has a near solar metallicity of [Fe/H] = −0.01[7] and it is estimated to be 76 million years old.[11]

  1. ^ a b c d e 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. ^ Cite error: The named reference Corben1971 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 e Cite error: The named reference Anders2022 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. ^ a b Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Phillip1980 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Westin1985 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Guarinos1995 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Cucchiaro1977 was invoked but never defined (see the help page).