18400+1724 SLE 231AB

 
 
18h 40m 02.68s +17 24' 07.8" P.A. 110 sep 18.1 mag 12.30,12.80
 
 
Coord 2000
18400+1724
Discov num
SLE 231
Comp
AB
Coord arcsec 2000
18 40 02.68 +17 24 07.8
Date first
1904
Date last
2013
Obs
8
Pa first
110
Pa last
110
P.A. Now (θ)
110°
Sep first
17.9
Sep last
18.1
Sep. Now (ρ)
18.1"
Mag pri
12.30
Mag sec
12.80
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
+000
Sec motion ra
+002
Pri motion dec
-003
Sec motion dec
-003
Notes
rPM=0.555
Nature of this double is uncertain.
 
 
18400+1724 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18400+1724 SLE 231 AB 1904 2013 8 110 18.1 12.30 12.80 0.50 <===
Show 18400+1724 TOB 294 BC 1982 2001 3 149 19.9 12.80 14.90 2.10
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
110
Precise sep
18.1
Constellation
Hercules
Tycho2
1587-01731-1
last precise pa
110
last precise sep
18.1
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18400+1724 SLE 231 AB 2002 5 110 18.1 12.62 12.60 D 184002.68+172407.8
18400+1724 SLE 231 AB 2013 8 110 18.1 12.30 12.80 184002.68+172407.8

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