19306+2817 BU  651AB

 
 
19h 30m 33.77s +28 16' 51.3" P.A. 287 sep 6.5 mag 8.89,12.90 Sp F2
 
 
Coord 2000
19306+2817
Discov num
BU  651
Comp
AB
Coord arcsec 2000
19 30 33.77 +28 16 51.3
Date first
1878
Date last
2013
Obs
19
Pa first
290
Pa last
287
P.A. Now (θ)
287°
Sep first
6.4
Sep last
6.5
Sep. Now (ρ)
6.5"
Mag pri
8.89
Mag sec
12.90
delta mag (ΔM)
4.01
Spectral class
F2 (yellow-white)
Pri motion ra
+006
Sec motion ra
-004
Pri motion dec
+000
Sec motion dec
+002
Notes
rPM=1.7
This double is not physical.
 
 
19306+2817 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19306+2817 COU1161 Aa,Ab 1973 1992 9 6 0.2 8.10 8.90 0.80
Show 19306+2817 COU1161 Aa,Ac 1992 2007 2 340 0.1 8.10 8.80 0.70
Show 19306+2817 BU 651 AB 1878 2013 19 287 6.5 8.89 12.90 4.01 <===
Quadruple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
287
Precise sep
6.5
Cdsa2 id
BU 651 AB
Constellation
Cygnus
Ra deg
19.509380555555556
De deg
28.280916666666666
last precise pa
287
last precise sep
6.5
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19306+2817 BU 651 AB 1999 16 288 6.3 8.89 12.90 D 193033.77+281651.3
19306+2817 BU 651 AB 2007 17 287 6.5 8.89 12.90 D 193033.77+281651.3
19306+2817 BU 651 AB 2013 19 287 6.5 8.90 12.90 F2 193033.77+281651.3

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