18418-1909 J  2221AB

 
 
18H 41M 44.78S -19 09' 14.4" P.A. 255 SEP 7.4 MAG 10.03,11.70
 
 
Coord 2000
18418-1909
Discov num
J  2221
Comp
AB
Coord arcsec 2000
18 41 44.78 -19 09 14.4
Date first
1942
Date last
1999
Obs
3
Pa first
265
Pa last
255
P.A. Now (θ)
255°
Sep first
5.0
Sep last
7.4
Sep. Now (ρ)
7.4"
Mag pri
10.03
Mag sec
11.70
delta mag (ΔM)
1.67
Spectral class
Pri motion ra
+021
Sec motion ra
-028
Pri motion dec
+009
Sec motion dec
-012
Notes
Nature of this double is uncertain.
 
 
18418-1909 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18418-1909 J 2221 AB 1942 1999 3 255 7.4 10.03 11.70 1.67 <===
Show 18418-1909 J 2221 AC 1942 1999 3 346 18.2 10.03 12.50 2.47
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
Tycho2
6288-01767-1
last precise pa
254.5
last precise sep
7.444