18147+5635 BU 1274BD

 
 
18H 14M 31.41S +56 34' 26.9" P.A. 5 SEP 5.4 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
2010
Obs
14
Pa first
6
Pa last
5
P.A. Now (θ)
Sep first
6.0
Sep last
5.4
Sep. Now (ρ)
5.4"
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 2010 7 145 1.1 9.80 10.60 0.80
Show 18147+5635 BU 1274 BD 1878 2010 14 5 5.4 9.80 10.40 0.60 <===
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Draco
last precise pa
5.3
last precise sep
5.36