20007+3635 WEB 9 AB (HD 189864)

 
 
20h 00m 44.81s +36 35' 23.0" P.A. 202.00 sep 71.6 mag 6.69,8.97 Sp B6IV dist. 254.45 pc (830.02 l.y.)
 
 
Coord 2000 20007+3635 Discov num WEB   9 Comp AB Coord arcsec 2000 20 00 44.81 +36 35 23.0
Date first 1896 Date last 2016 Obs 22
Pa first 203 Pa last 202 P.A. Now (θ) 202°
Sep first 70.5 Sep last 71.6 Sep. Now (ρ) 71.6"
Mag pri 6.69 Mag sec 8.97 delta mag (ΔM) 2.28 Spectral class B6IV (blue-white)
Pri motion ra +004 Sec motion ra -001
Pri motion dec -001 Sec motion dec -005
Notes N (See Notes)
rPM=1.256
This double is not physical.
 
 
20007+3635 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 69252 20 00 45 +36 35 23 HDS 2851 Aa,Ab 2011 2 171 0.4 6.76 9.75 2.99
Show HD 189864 69252 20 00 45 +36 35 23 WEB 9 AB 2016 22 202 71.6 6.69 8.97 2.28 <===
Show 69252 20 00 45 +36 35 23 WEB 9 AC 2004 12 220 82.1 6.69 9.84 3.15
Show 69251 20 00 43 +36 34 17 WEB 9 BC 2018 21 278 26.3 8.97 9.84 0.87
Show 20 00 40 +36 34 20 WEB 9 CD 2018 13 325 13.9 9.84 10.30 0.46
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189864 Constellation Cygnus SAO 69252 HIP 98510
Tycho2 2682-02072-1 Gaia DR2 2060120375407807744 HD 189864 GC 27750
DM BD+36 3815 BD BD+36 3816 Distance 254.45 Distance ly 830.02