HD 187734

HD 187734
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 51m 26.84135s[1]
Declination +04° 05′ 19.0767″[1]
Apparent magnitude (V) 6.6242±0.0012[2] (6.71 + 9.42)[3]
Characteristics
Spectral type K2III + A5V[4]
Astrometry
Radial velocity (Rv)−3.70±0.21[2] km/s
Proper motion (μ) RA: -1.70[1] mas/yr
Dec.: -5.82[1] mas/yr
Parallax (π)1.31 ± 0.86 mas[1]
Distanceapprox. 2,000 ly
(approx. 800 pc)
Details
HD 187734 A
Mass8.8±0.1[5] M☉
Luminosity3,339[6] L☉
Temperature4,128[6] K
Age29.0±3.4 Myr
Other designations
BD+03° 4172, HD 188385, HIP 97709, SAO 125141, WDS J19514+0405.
Database references
SIMBADdata

HD 187734 is double star in the equatorial constellation of Aquila. The primary is a magnitude 6.6 giant star, while the companion is a magnitude 9.4 A-type main sequence star.[4] As of 2014, the pair had an angular separation of 5″ along a position angle of 99°.[3]

  1. ^ a b c d e Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference aa430_165 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference abt1985 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference mnras410_1_190 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Mcdonald_et_al_2012 was invoked but never defined (see the help page).