HD 173417

HD 173417
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
Right ascension 18h 43m 51.59217s[1]
Declination +31° 55′ 35.8058″[1]
Apparent magnitude (V) 5.68[2]
Characteristics
Spectral type F1III-IV[3]
B−V color index +0.360±0.004[2]
Variable type Constant[4]
Astrometry
Radial velocity (Rv)−3.26±0.57[1] km/s
Proper motion (μ) RA: −32.768[1] mas/yr
Dec.: −125.812[1] mas/yr
Parallax (π)19.27 ± 0.60 mas[1]
Distance169 ± 5 ly
(52 ± 2 pc)
Absolute magnitude (MV)2.17[5]
Details
Mass1.60[6] M☉
Radius2.243[2] R☉
Luminosity10.407[2] L☉
Surface gravity (log g)3.91[6] cgs
Temperature6,928[2] K
Metallicity [Fe/H]−0.21[6] dex
Rotational velocity (v sin i)53.9±2.7[7] km/s
Age1.70[6] Gyr
Other designations
BD+31°3348, GC 25643, HD 173417, HIP 91883, HR 7044, SAO 67293, GSC 02641-02397[8]
Database references
SIMBADdata

HD 173417 is a single[9] star in the northern constellation of Lyra. It is dimly visible to the naked eye with an apparent visual magnitude of 5.68,[2] positioned about two degrees to the southwest of the bright star Sheliak.[10] The distance to this star is approximately 169 light years based on parallax measurements, and it is slowly drifting closer with a radial velocity of −3 km/s.[1]

The stellar classification of this star is F1III-IV,[3] matching an evolving star with the mixed luminosity traits of a subgiant and giant star. It is 1.7 billion years old with a low metallicity and a relatively high projected rotational velocity of 54 km/s.[7] The star has 1.6[6] times the mass of the Sun and 2.2 times the Sun's radius. It is radiating over 10 times the luminosity of the Sun from its photosphere at an effective temperature of 6,928 K.[2]

  1. ^ a b c d e f g Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Schofield_et_al_2019 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Cowley_Fraquelli_1974 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Breger_et_al_1981 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Copahagen_et_al_2011 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Reiners2006 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 Eggleton_Tokovinin_2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Sinnott_Perryman_1997 was invoked but never defined (see the help page).