HD 171301

HD 171301
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
Right ascension 18h 32m 49.95782s[1]
Declination +30° 33′ 15.14853″[1]
Apparent magnitude (V) 5.47[2] + 12.7[3]
Characteristics
Spectral type B8IV[4] or B8V[5]
U−B color index −0.463[2]
B−V color index −0.077±0.003[2]
Astrometry
Radial velocity (Rv)−10.3±1.5[6] km/s
Proper motion (μ) RA: 13.229[1] mas/yr
Dec.: 11.581[1] mas/yr
Parallax (π)9.3894 ± 0.1103 mas[1]
Distance347 ± 4 ly
(107 ± 1 pc)
Absolute magnitude (MV)0.27[2]
Details
A
Mass3.12±0.03[7] M☉
Radius2.7±0.1[8] R☉
Luminosity123.8+7.7
−7.1[7] L☉
Temperature11,695±81[7] K
Metallicity [Fe/H]+0.08±0.07[9] dex
Rotational velocity (v sin i)36±2[5] km/s
Other designations
BD+30°3223, GC 25340, HD 171301, HIP 90923, HR 6968, SAO 67090, CCDM J18328+3033, GSC 02624-02539[10]
Database references
SIMBADdata

HD 171301 is a suspected binary star[11] system in the northern constellation of Lyra. It has not been well-studied.[5] The brighter member of the pair, designated component A,[3] has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.47.[2] The system is located at a distance of approximately 347 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −10 km/s.[6]

The stellar classification of HD 171301 is B8IV,[4] matching a late B-type star that may be a subgiant that is evolving off the main sequence. HD 171301 appears to be a type of chemically peculiar mercury-manganese star.[5] It has an estimated mass three[7] times that of the Sun and 2.7 times the Sun's radius.[8] The star is spinning with a projected rotational velocity of 36 km/s.[5] It is radiating 124[7] times the luminosity of the Sun from its photosphere at an effective temperature of 11,695 K.[7]

Its companion, component B, is a 13th magnitude star of an unknown spectral type.[12] It was first reported by S. W. Burnham in 1891. As of 1998, it was located at an angular separation of 6.7 arcseconds from the brighter star along a position angle of 157°.[3]

  1. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Mason_et_al_2014 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Osawa1959 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Adelman_et_al_2017 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  7. ^ a b c d e f Cite error: The named reference Zorec_Royer_2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella_et_al_2019 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Gáspár_et_al_2016 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD_A was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton_Tokovinin_2008 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference SIMBAD_B was invoked but never defined (see the help page).