21578-4255 DON 1020

 
 
21h 57m 50.80s -42° 55' 16.2" P.A. 52.00 sep 1.7 mag 11.19,12.78
 
 
Coord 2000 21578-4255 Discov num DON1020 Comp Coord arcsec 2000 21 57 50.80 -42 55 16.2
Date first 1931 Date last 2016 Obs 6
Pa first 53 Pa last 52.2 P.A. Now (θ) 52.2°
Sep first 1.6 Sep last 1.693 Sep. Now (ρ) 1.693"
Mag pri 11.19 Mag sec 12.78 delta mag (ΔM) 1.59 Spectral class
Pri motion ra +018 Sec motion ra +018
Pri motion dec +000 Sec motion dec +000
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Grus Tycho2 7990-00983-1 Gaia DR2 6571189431898481024