18496-1654 HWE  44AC

 
 
18h 49m 35.81s -16 54' 19.6" P.A. 308 sep 35.9 mag 8.59,11.79 Sp B9III
 
 
Coord 2000
18496-1654
Discov num
HWE  44
Comp
AC
Coord arcsec 2000
18 49 35.81 -16 54 19.6
Date first
1879
Date last
2000
Obs
8
Pa first
305
Pa last
308
P.A. Now (θ)
308°
Sep first
34.1
Sep last
35.9
Sep. Now (ρ)
35.9"
Mag pri
8.59
Mag sec
11.79
delta mag (ΔM)
3.2
Spectral class
B9III (blue-white)
Pri motion ra
+007
Sec motion ra
+003
Pri motion dec
-028
Sec motion dec
-005
Notes
rPM=0.809
This double is not physical.
 
 
18496-1654 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18496-1654 HWE 44 AB 1888 2003 7 298 2.0 8.59 10.26 1.67
Show 18496-1654 HWE 44 AC 1879 2000 8 308 35.9 8.59 11.79 3.20 <===
Show 18496-1654 KNP 3 AD 1965 2000 4 199 22.5 8.59 12.50 3.91
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
307.8
Precise sep
35.892
Constellation
Sagittarius
last precise pa
307.8
last precise sep
35.892
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18496-1654 HWE 44 AC 1998 6 308 35.7 8.59 11.50 B9III D 184935.81-165419.6
18496-1654 HWE 44 AC 2000 8 308 35.9 8.59 11.50 B9III D 184935.81-165419.6

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