18109+4242 ROE   6CD

 
 
18h 10m 00.42s +42 45' 32.5" P.A. 228 sep 11.4 mag 11.45,11.15
 
 
Coord 2000
18109+4242
Discov num
ROE   6
Comp
CD
Coord arcsec 2000
18 10 00.42 +42 45 32.5
Date first
1893
Date last
2013
Obs
7
Pa first
298
Pa last
228
P.A. Now (θ)
228°
Sep first
12.7
Sep last
11.4
Sep. Now (ρ)
11.4"
Mag pri
11.45
Mag sec
11.15
delta mag (ΔM)
0.3
Spectral class
Pri motion ra
-020
Sec motion ra
-006
Pri motion dec
+116
Sec motion dec
+012
Notes
rPM=0.891
This double is not physical.
 
 
18109+4242 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18109+4242 ROE 5 AB 1909 2008 5 114 15.0 11.41 13.19 1.78
Show 18109+4242 ROE 5 AC 1893 2003 6 32 192.4 11.41 11.45 0.04
Show 18109+4242 ROE 6 CD 1893 2013 7 228 11.4 11.45 11.15 0.30 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
228.4
Precise sep
11.38
Constellation
Hercules
last precise pa
228.4
last precise sep
11.38
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18109+4242 ROE 6 CD 1915 2 286 10.7 10.80 11.40 181006.67+424200.0
18109+4242 ROE 6 CD 1998 5 236 10.3 11.45 12.00 D 181000.42+424532.5
18109+4242 ROE 6 CD 2003 6 234 10.6 11.45 12.00 D 181000.42+424532.5
18109+4242 ROE 6 CD 2013 7 228 11.4 11.45 11.15 181000.42+424532.5

If you need more information about this double, apply for a data request form to the WDS.