18399-2531 ARG  32AC

 
 
18h 39m 52.28s -25 30' 16.5" P.A. 285 sep 53.3 mag 8.60,8.84 Sp A0 dist. 73.53 pc (239.85 l.y.)
 
 
Coord 2000
18399-2531
Discov num
ARG  32
Comp
AC
Coord arcsec 2000
18 39 52.28 -25 30 16.5
Date first
1862
Date last
1999
Obs
14
Pa first
285
Pa last
285
P.A. Now (θ)
285°
Sep first
68.7
Sep last
53.3
Sep. Now (ρ)
53.3"
Mag pri
8.60
Mag sec
8.84
delta mag (ΔM)
0.24
Spectral class
A0 (white)
Pri motion ra
+000
Sec motion ra
+002
Pri motion dec
-012
Sec motion dec
-005
Notes
Z (Parallax indicates components are physical)
rPM=0.607
This double is physical.
 
 
18399-2531 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 187106 18399-2531 ARG 32 AB 1862 1999 18 219 7.1 8.60 9.10 0.50
Show 187106 18399-2531 ARG 32 AC 1862 1999 14 285 53.3 8.60 8.84 0.24 <===
Show 187106 18399-2531 ARG 32 AD 1862 1999 5 217 80.2 8.60 11.33 2.73
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
285.2
Precise sep
53.289
Constellation
Sagittarius
SAO
187106
HIP
91524
Tycho2
6862-01144-1
HD
172193
CD
CD-2513320
CP
CP-25 6581
Distance
73.53
Distance ly
239.85
last precise pa
285.2
last precise sep
53.289
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18399-2531 ARG 32 AC 1999 13 285 53.4 8.60 8.84 A0 ZD 183952.28-253016.5

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