20421+5013 ES 91 AB

 
 
20h 42m 03.97s +50 13' 49.1" P.A. 189.00 sep 4.6 mag 11.54,11.70
 
 
Coord 2000 20421+5013 Discov num ES   91 Comp AB Coord arcsec 2000 20 42 03.97 +50 13 49.1
Date first 1901 Date last 2018 Obs 13
Pa first 188 Pa last 189.2 P.A. Now (θ) 189.2°
Sep first 4.4 Sep last 4.555 Sep. Now (ρ) 4.555"
Mag pri 11.54 Mag sec 11.70 delta mag (ΔM) 0.16 Spectral class
Pri motion ra +001 Sec motion ra
Pri motion dec +080 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20421+5013 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 42 04 +50 13 49 ES 91 AB 2018 13 189 4.6 11.54 11.70 0.16 <===
Show 20 42 04 +50 13 49 ES 91 AC 2018 13 235 17.6 11.54 11.66 0.12
Show 20 42 04 +50 13 45 ES 91 BC 2018 14 247 14.8 11.05 11.66 0.61
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2168333107190987136