20454+4816 UC 254 (HD 197988)

 
 
20h 45m 24.35s +48 16' 25.9" P.A. 181.00 sep 17.9 mag 8.37,12.41 Sp F0V
 
 
Coord 2000 20454+4816 Discov num UC  254 Comp Coord arcsec 2000 20 45 24.35 +48 16 25.9
Date first 1999 Date last 2016 Obs 10
Pa first 181 Pa last 181.4 P.A. Now (θ) 181.4°
Sep first 17.8 Sep last 17.901 Sep. Now (ρ) 17.901"
Mag pri 8.37 Mag sec 12.41 delta mag (ΔM) 4.04 Spectral class F0V (yellow-white)
Pri motion ra +059 Sec motion ra +064
Pri motion dec +087 Sec motion dec +082
Notes V (Proper motion indicates physical)
rPM=0.067 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 197988 Constellation Cygnus SAO 50030 Tycho2 3578-00245-1
Gaia DR2 2167561559263854336 HD 197988 DM BD+47 3180