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
Cdsa2 id
ES 804 BC
Constellation
Cygnus
Ra deg
20.572619444444445
De deg
45.335861111111114
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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