21490+4254 TDT 3172

 
 
21h 48m 57.78s +42° 54' 14.9" P.A. 164.00 sep 0.4 mag 10.51,10.54
 
 
Coord 2000 21490+4254 Discov num TDT3172 Comp Coord arcsec 2000 21 48 57.78 +42 54 14.9
Date first 1991 Date last 1991 Obs 1
Pa first 164 Pa last 163.8 P.A. Now (θ) 163.8°
Sep first 0.4 Sep last 0.39 Sep. Now (ρ) 0.39"
Mag pri 10.51 Mag sec 10.54 delta mag (ΔM) 0.03 Spectral class
Pri motion ra -036 Sec motion ra -036
Pri motion dec -098 Sec motion dec -098
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3192-00124-1 Gaia DR2 1972724800275689984