20440+4030 SLN 85

 
 
20h 44m 01.03s +40° 30' 14.4" P.A. 203.00 sep 9.1 mag 15.30,17.90 Sp DA+DAH
 
 
Coord 2000 20440+4030 Discov num SLN  85 Comp Coord arcsec 2000 20 44 01.03 +40 30 14.4
Date first 1998 Date last 2016 Obs 7
Pa first 203 Pa last 203 P.A. Now (θ) 203°
Sep first 9.3 Sep last 9.07 Sep. Now (ρ) 9.07"
Mag pri 15.30 Mag sec 17.90 delta mag (ΔM) 2.6 Spectral class DA+DAH (white dwarf/white dwarf)
Pri motion ra +019 Sec motion ra
Pri motion dec +047 Sec motion dec
Notes V (Proper motion indicates physical)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2066035777984385664