20151+4118 A   387CD

 
 
20h 15m 06.82s +41 17' 39.0" P.A. 19 sep 9 mag 10.75,13.00
 
 
Coord 2000
20151+4118
Discov num
A   387
Comp
CD
Coord arcsec 2000
20 15 06.82 +41 17 39.0
Date first
1998
Date last
2002
Obs
2
Pa first
19
Pa last
19
P.A. Now (θ)
19°
Sep first
9.1
Sep last
9.0
Sep. Now (ρ)
9"
Mag pri
10.75
Mag sec
13.00
delta mag (ΔM)
2.25
Spectral class
Pri motion ra
+007
Sec motion ra
Pri motion dec
+005
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20151+4118 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20151+4118 A 387 AB 1902 2016 8 151 5.1 7.90 11.48 3.58
Show 20151+4118 A 387 AC 1892 2016 7 222 21.6 7.90 10.75 2.85
Show 20151+4118 A 387 CD 1998 2002 2 19 9.0 10.75 13.00 2.25 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
19.4
Precise sep
9.018
Constellation
Cygnus
last precise pa
19.4
last precise sep
9.018
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20151+4118 A 387 CD 1998 1 19 9.1 10.75 13.00 N D 201506.82+411739.0
20151+4118 A 387 CD 2002 2 19 9.0 10.75 13.00 N D 201506.82+411739.0

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