17220+5638 ES 2657BC

 
 
17H 22M 05.43S +56 37' 39.5" P.A. 74 SEP 11.7 MAG 11.20,11.50
 
 
Coord 2000
17220+5638
Discov num
ES 2657
Comp
BC
Coord arcsec 2000
17 22 05.43 +56 37 39.5
Date first
1907
Date last
2016
Obs
8
Pa first
76
Pa last
74
P.A. Now (θ)
74°
Sep first
11.8
Sep last
11.7
Sep. Now (ρ)
11.7"
Mag pri
11.20
Mag sec
11.50
delta mag (ΔM)
0.3
Spectral class
Pri motion ra
-019
Sec motion ra
-011
Pri motion dec
-034
Sec motion dec
-034
Notes
rPM=0.205 (< 0.3, Physical double)
This double is physical.
 
 
17220+5638 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 30359 17220+5638 ES 2657 AB 1907 2016 8 98 28.4 8.60 11.20 2.60
Show 30359 17220+5638 ES 2657 AC 1907 2016 5 91 39.2 8.60 11.50 2.90
Show 30359 17220+5638 ABH 90 AD 1988 2003 3 114 83.8 8.65 14.67 6.02
Show 17220+5638 ES 2657 BC 1907 2016 8 74 11.7 11.20 11.50 0.30 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Draco
last precise pa
74.1
last precise sep
11.736