20343+4520 ES  804BC

 
 
20h 34m 21.43s +45 20' 09.1" P.A. 128 sep 2.2 mag 11.52,12.60
 
 
Coord 2000
20343+4520
Discov num
ES  804
Comp
BC
Coord arcsec 2000
20 34 21.43 +45 20 09.1
Date first
1909
Date last
2009
Obs
4
Pa first
123
Pa last
128
P.A. Now (θ)
128°
Sep first
2.4
Sep last
2.2
Sep. Now (ρ)
2.2"
Mag pri
11.52
Mag sec
12.60
delta mag (ΔM)
1.08
Spectral class
Pri motion ra
-008
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20343+4520 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20343+4520 ES 804 AB 1892 2003 11 117 31.3 10.56 11.52 0.96
Show 20343+4520 ES 804 BC 1909 2009 4 128 2.2 11.52 12.60 1.08 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
128.4
Precise sep
2.245
Constellation
Cygnus
last precise pa
128.4
last precise sep
2.245
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20343+4520 ES 804 BC 2002 3 127 2.2 9.60 10.70 203421.43+452009.1
20343+4520 ES 804 BC 2009 4 128 2.2 9.60 10.70 203421.43+452009.1

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