20240-4231 DON 984 (HD 193831)

 
 
20h 24m 02.49s -42 31' 05.3" P.A. 258.00 sep 0.9 mag 9.65,9.62 Sp A2V
 
 
Coord 2000 20240-4231 Discov num DON 984 Comp Coord arcsec 2000 20 24 02.49 -42 31 05.3
Date first 1930 Date last 2008 Obs 4
Pa first 249 Pa last 257.8 P.A. Now (θ) 257.8°
Sep first 0.7 Sep last 0.941 Sep. Now (ρ) 0.941"
Mag pri 9.65 Mag sec 9.62 delta mag (ΔM) 0.03 Spectral class A2V (white)
Pri motion ra +017 Sec motion ra +017
Pri motion dec -006 Sec motion dec -006
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 193831 Constellation Sagittarius SAO 230186 Tycho2 7957-00425-1
Gaia DR2 6679358664283089152 HD 193831 DM CP-42 9070