20421+4125 COU 2420

 
 
20h 42m 04.34s +41° 24' 46.5" P.A. 90.00 sep 0.5 mag 9.85,10.26 Sp A0
 
 
Coord 2000 20421+4125 Discov num COU2420 Comp Coord arcsec 2000 20 42 04.34 +41 24 46.5
Date first 1987 Date last 2016 Obs 7
Pa first 86 Pa last 89.6 P.A. Now (θ) 89.6°
Sep first 0.4 Sep last 0.509 Sep. Now (ρ) 0.509"
Mag pri 9.85 Mag sec 10.26 delta mag (ΔM) 0.41 Spectral class A0 (white)
Pri motion ra +007 Sec motion ra +007
Pri motion dec -001 Sec motion dec -001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3174-00584-1 Gaia DR2 2066155521672514432