20578+3923 BKO 475

 
 
20h 57m 49.85s +39° 22' 42.7" P.A. 265.00 sep 5.5 mag 10.60,12.50
 
 
Coord 2000 20578+3923 Discov num BKO 475 Comp Coord arcsec 2000 20 57 49.85 +39 22 42.7
Date first 2000 Date last 2015 Obs 8
Pa first 269 Pa last 265.4 P.A. Now (θ) 265.4°
Sep first 5.5 Sep last 5.484 Sep. Now (ρ) 5.484"
Mag pri 10.60 Mag sec 12.50 delta mag (ΔM) 1.9 Spectral class
Pri motion ra -001 Sec motion ra -021
Pri motion dec +021 Sec motion dec -004
Notes
rPM=1.498
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3171-00298-1 Gaia DR2 1873024173950071040