20328+3954 ES 1680AB

 
 
20h 32m 44.73s +39 54' 20.9" P.A. 4.00 sep 50.7 mag 9.91,11.56
 
 
Coord 2000
20328+3954
Discov num
ES 1680
Comp
AB
Coord arcsec 2000
20 32 44.73 +39 54 20.9
Date first
1892
Date last
2015
Obs
9
Pa first
6
Pa last
4
P.A. Now (θ)
Sep first
52.2
Sep last
50.7
Sep. Now (ρ)
50.7"
Mag pri
9.91
Mag sec
11.56
delta mag (ΔM)
1.65
Spectral class
Pri motion ra
+007
Sec motion ra
-014
Pri motion dec
+001
Sec motion dec
-038
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=1.094
This double is not physical.
 
 
20328+3954 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20328+3954 ES 1680 AB 1892 2015 9 4 50.7 9.91 11.56 1.65 <===
Show 20328+3954 ES 1680 BC 1917 2015 7 28 2.7 11.56 12.30 0.74
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
4.3
Precise sep
50.701
Constellation
Cygnus
Tycho2
3157-00760-1
Gaia DR2
42039940864
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20328+3954 ES 1680 AB 1998 6 5 51.2 9.91 11.56 N D 203244.73+395420.9
20328+3954 ES 1680 AB 2002 7 5 50.9 9.91 11.56 N D 203244.73+395420.9
20328+3954 ES 1680 AB 2013 8 5 51.0 9.91 11.56 N 203244.73+395420.9
20328+3954 ES 1680 AB 2015 9 4 50.7 9.91 11.56 N 203244.73+395420.9

If you need more information about this double, apply for a data request form to the WDS.