18109+4242 ROE   5AB

 
 
18h 09m 51.11s +42 42' 51.0" P.A. 114 sep 15 mag 11.41,13.19
 
 
Coord 2000
18109+4242
Discov num
ROE   5
Comp
AB
Coord arcsec 2000
18 09 51.11 +42 42 51.0
Date first
1909
Date last
2008
Obs
5
Pa first
108
Pa last
114
P.A. Now (θ)
114°
Sep first
12.7
Sep last
15.0
Sep. Now (ρ)
15"
Mag pri
11.41
Mag sec
13.19
delta mag (ΔM)
1.78
Spectral class
Pri motion ra
-003
Sec motion ra
-013
Pri motion dec
-007
Sec motion dec
-018
Notes
rPM=0.67
Nature of this double is uncertain.
 
 
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
114.3
Precise sep
14.96
Constellation
Hercules
Tycho2
3110-00262-1
last precise pa
114.3
last precise sep
14.96
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18109+4242 ROE 5 AB 1915 2 109 14.8 12.09 12.70 181053.32+424105.0
18109+4242 ROE 5 AB 1998 3 114 14.8 11.41 12.66 D 180951.11+424251.0
18109+4242 ROE 5 AB 2008 4 114 15.0 11.41 12.66 D 180951.11+424251.0

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