20328+3954 ES 1680BC

 
 
20h 32m 45.08s +39 55' 11.5" P.A. 28 sep 2.7 mag 11.56,12.30
 
 
Coord 2000
20328+3954
Discov num
ES 1680
Comp
BC
Coord arcsec 2000
20 32 45.08 +39 55 11.5
Date first
1917
Date last
2015
Obs
6
Pa first
21
Pa last
28
P.A. Now (θ)
28°
Sep first
2.3
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
11.56
Mag sec
12.30
delta mag (ΔM)
0.74
Spectral class
Pri motion ra
-014
Sec motion ra
+046
Pri motion dec
-040
Sec motion dec
+083
Notes
N U (See Notes, Proper motion indicates non-physical)
rPM=1.442
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 2013 8 5 51.0 9.91 11.56 1.65
Show 20328+3954 ES 1680 BC 1917 2015 6 28 2.7 11.56 12.30 0.74 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
28.1
Precise sep
2.7
Cdsa2 id
ES 1680 BC
Constellation
Cygnus
Ra deg
20.54585555555556
De deg
39.91986111111111
last precise pa
28.1
last precise sep
2.7
 
 
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 BC 1975 4 28 2.6 11.56 12.30 N 203245.08+395511.5
20328+3954 ES 1680 BC 2011 5 21 2.7 11.56 12.30 Nu 203245.08+395511.5
20328+3954 ES 1680 BC 2015 6 28 2.7 11.56 12.30 Nu 203245.08+395511.5

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