18492+1813 SMA  81AB

 
 
18H 49M 12.54S +18 12' 50.8" P.A. 338 SEP 22.1 MAG 11.23,11.65 SP G0
 
 
Coord 2000
18492+1813
Discov num
SMA  81
Comp
AB
Coord arcsec 2000
18 49 12.54 +18 12 50.8
Date first
1895
Date last
2013
Obs
8
Pa first
339
Pa last
338
P.A. Now (θ)
338°
Sep first
19.9
Sep last
22.1
Sep. Now (ρ)
22.1"
Mag pri
11.23
Mag sec
11.65
delta mag (ΔM)
0.42
Spectral class
G0 (yellow)
Pri motion ra
+009
Sec motion ra
+003
Pri motion dec
-011
Sec motion dec
+003
Notes
Nature of this double is uncertain.
 
 
18492+1813 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18492+1813 SMA 81 AB 1895 2013 8 338 22.1 11.23 11.65 0.42 <===
Show 18492+1813 DAM 353 AC 1997 2000 2 118 6.5 11.23 14.00 2.77
Show 18492+1813 DAM 353 AD 1997 2013 3 259 9.4 11.23 13.00 1.77
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
last precise pa
338.1
last precise sep
22.1