HD 176871

HD 176871
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
Right ascension 19h 01m 17.35683s[1]
Declination +26° 17′ 29.0764″[1]
Apparent magnitude (V) 5.69[2]
Characteristics
Spectral type B5V[3][2][4]
U−B color index −0.55[3]
B−V color index −0.086±0.002[2]
Astrometry
Radial velocity (Rv)−20.4±1.2[2] km/s
Proper motion (μ) RA: −0.489[1] mas/yr
Dec.: −9.207[1] mas/yr
Parallax (π)4.1038 ± 0.0835 mas[1]
Distance790 ± 20 ly
(244 ± 5 pc)
Absolute magnitude (MV)−0.80[2]
Details
Mass5.4[4] M☉
Luminosity232.54[5] L☉
Surface gravity (log g)4.5[4] cgs
Temperature10,540[5] K
Rotational velocity (v sin i)268±34[6] km/s
Age11[4] Myr
Other designations
BD+26°3429, FK5 3518, GC 26151, HD 176871, HIP 93393, HR 7202, SAO 86707[7]
Database references
SIMBADdata

HD 176871 is a single[8] star in the northern constellation of Lyra, positioned near the southern constellation border with Vulpecula. This object has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.69.[2] It is located at a distance of approximately 790 light years from the Sun based on parallax, and has an absolute magnitude of −0.80.[2] The star is drifting closer with a radial velocity of −20 km/s.[2]

This is a normal B-type main-sequence star with a stellar classification of B5V,[3] which means it is generating energy via core hydrogen fusion. The star is around 11[4] million years old with 5.4[4] times the mass of the Sun and is spinning rapidly with a projected rotational velocity of 268 km/s.[6] It is radiating 233[5] times the luminosity of the Sun from its photosphere at an effective temperature of 10,540 K.[5]

  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 f g h Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Hill1977 was invoked but never defined (see the help page).
  4. ^ a b c d e f Cite error: The named reference Gullikson2016 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Maestro2013 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).