20397+4734 A 747 AB

 
 
20h 39m 42.24s +47 34' 26.9" P.A. 104.00 sep 0.3 mag 8.70,9.00 Sp A0
 
 
Coord 2000 20397+4734 Discov num A   747 Comp AB Coord arcsec 2000 20 39 42.24 +47 34 26.9
Date first 1904 Date last 2009 Obs 21
Pa first 135 Pa last 103.8 P.A. Now (θ) 103.8°
Sep first 0.3 Sep last 0.303 Sep. Now (ρ) 0.303"
Mag pri 8.70 Mag sec 9.00 delta mag (ΔM) 0.3 Spectral class A0 (white)
Pri motion ra +005 Sec motion ra
Pri motion dec +009 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20397+4734 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49906 20 39 42 +47 34 27 A 747 AB 2009 21 104 0.3 8.70 9.00 0.30 <===
Show HD 197117 49906 20 39 42 +47 34 27 ES 90 AB,C 2019 10 141 7.1 8.48 12.00 3.52
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 49906 Tycho2 3578-03166-1 Gaia DR2 2167457999017893504
HD 197117