21117+3818 SMA 136

 
 
21h 11m 46.82s +38° 16' 56.8" P.A. 122.00 sep 3.8 mag 10.90,11.60
 
 
Coord 2000 21117+3818 Discov num SMA 136 Comp Coord arcsec 2000 21 11 46.82 +38 16 56.8
Date first 1923 Date last 2016 Obs 9
Pa first 142 Pa last 121.9 P.A. Now (θ) 121.9°
Sep first 4.0 Sep last 3.8 Sep. Now (ρ) 3.8"
Mag pri 10.90 Mag sec 11.60 delta mag (ΔM) 0.7 Spectral class
Pri motion ra -010 Sec motion ra -002
Pri motion dec -022 Sec motion dec -020
Notes N (See Notes)
rPM=0.341
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 1868972512271244928