20568+4254 ENG  77CD

 
 
20h 56m 51.88s +42 55' 45.5" P.A. 356 sep 92.9 mag 9.13,11.06 Sp A2
 
 
Coord 2000
20568+4254
Discov num
ENG  77
Comp
CD
Coord arcsec 2000
20 56 51.88 +42 55 45.5
Date first
1892
Date last
2002
Obs
11
Pa first
356
Pa last
356
P.A. Now (θ)
356°
Sep first
92.6
Sep last
92.9
Sep. Now (ρ)
92.9"
Mag pri
9.13
Mag sec
11.06
delta mag (ΔM)
1.93
Spectral class
A2 (white)
Pri motion ra
-006
Sec motion ra
+005
Pri motion dec
-013
Sec motion dec
-008
Notes
N (See Notes)
rPM=0.844
This double is not physical.
 
 
20568+4254 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20568+4254 ENG 77 AB 1892 2002 11 328 100.0 7.31 10.16 2.85
Show 20568+4254 ENG 77 AC 1892 2012 18 17 125.8 7.31 9.13 1.82
Show 20568+4254 ENG 77 BC 1892 2002 12 69 100.8 10.16 9.13 1.03
Show 20568+4254 ENG 77 CD 1892 2002 11 356 92.9 9.13 11.06 1.93 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
356.2
Precise sep
92.873
Cdsa2 id
ENG 77 CD
Constellation
Cygnus
Tycho2
3175-00251-1
Ra deg
20.947744444444446
De deg
42.92930555555555
last precise pa
356.2
last precise sep
92.873
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20568+4254 ENG 77 CD 2000 10 356 92.7 9.13 11.06 A2 D 205651.88+425545.5
20568+4254 ENG 77 CD 2002 11 356 92.9 9.13 11.06 A2 N D 205651.88+425545.5

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