18147+5635 BU 1274BD

 
 
18h 14m 31.41s +56 34' 26.9" P.A. 6 sep 5.3 mag 9.80,10.40
 
 
Coord 2000
18147+5635
Discov num
BU 1274
Comp
BD
Coord arcsec 2000
18 14 31.41 +56 34 26.9
Date first
1878
Date last
2017
Obs
15
Pa first
6
Pa last
6
P.A. Now (θ)
Sep first
6.0
Sep last
5.3
Sep. Now (ρ)
5.3"
Mag pri
9.80
Mag sec
10.40
delta mag (ΔM)
0.6
Spectral class
Pri motion ra
-001
Sec motion ra
+002
Pri motion dec
+020
Sec motion dec
+021
Notes
N (See Notes)
rPM=0.15 (< 0.3, Physical double)
This double is physical.
 
 
18147+5635 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 30836 18147+5635 BU 1274 A,BC 1878 2003 15 238 93.7 6.37 10.91 4.54
Show 18147+5635 BU 1274 BC 1892 2017 8 144 1.0 9.80 10.60 0.80
Show 18147+5635 BU 1274 BD 1878 2017 15 6 5.3 9.80 10.40 0.60 <===
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
5.7
Precise sep
5.348
Cdsa2 id
BU 1274 BD
Constellation
Draco
Ra deg
18.242058333333333
De deg
56.57413888888889
last precise pa
5.7
last precise sep
5.348
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18147+5635 BU 1274 BD 2000 11 5 5.4 9.80 10.40 N D 181431.40+563426.8
18147+5635 BU 1274 BD 2010 12 5 5.4 9.80 10.40 N D 181431.41+563426.9
18147+5635 BU 1274 BD 2017 15 6 5.3 9.80 10.40 N 181431.41+563426.9

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