20189+3817 A 1425 AB

 
 
20h 18m 51.71s +38 16' 46.5" P.A. 266.00 sep 0.2 mag 7.95,8.25 Sp O9III dist. 1086.96 pc (3545.66 l.y.)
 
 
Coord 2000 20189+3817 Discov num A  1425 Comp AB Coord arcsec 2000 20 18 51.71 +38 16 46.5
Date first 1906 Date last 2011 Obs 27
Pa first 297 Pa last 266.2 P.A. Now (θ) 266.2°
Sep first 0.2 Sep last 0.182 Sep. Now (ρ) 0.182"
Mag pri 7.95 Mag sec 8.25 delta mag (ΔM) 0.3 Spectral class O9III (blue)
Pri motion ra -010 Sec motion ra
Pri motion dec -013 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
20189+3817 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 69815 20 18 52 +38 16 46 A 1425 AB 2011 27 266 0.2 7.95 8.25 0.30 <===
Show 69815 20 18 52 +38 16 46 A 1425 AB,C 2015 7 310 9.1 6.65 13.20 6.55
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 69815 HIP 100146 Tycho2 3151-03449-1
Gaia DR2 2061252769282480512 HD 193443 BD BD+37 3879 Distance 1086.96
Distance ly 3545.66