20316+4113 ES 1679 AB

 
 
20h 31m 37.49s +41 13' 20.9" P.A. 214.00 sep 4.0 mag 10.57,13.20 Sp O6IV+B0IV
 
 
Coord 2000 20316+4113 Discov num ES 1679 Comp AB Coord arcsec 2000 20 31 37.49 +41 13 20.9
Date first 1917 Date last 2015 Obs 9
Pa first 217 Pa last 214.4 P.A. Now (θ) 214.4°
Sep first 4.5 Sep last 3.977 Sep. Now (ρ) 3.977"
Mag pri 10.57 Mag sec 13.20 delta mag (ΔM) 2.63 Spectral class O6IV+B0IV (blue/blue-white)
Pri motion ra -008 Sec motion ra
Pri motion dec -018 Sec motion dec
Notes V (Proper motion indicates physical)
This double is physical.
 
 
20316+4113 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 31 37 +41 13 21 ES 1679 AB 2015 9 214 4.0 10.57 13.20 2.63 <===
Show 20 31 37 +41 13 21 CAN 75 AC 2005 2 166 8.2 5.70 12.70 7.00
Show 20 31 37 +41 13 21 CAN 75 AD 2015 7 269 11.8 5.70 12.40 6.70
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3157-00299-1