18081-1925 ARA 730AB

 
 
18h 08m 07.69s -19 24' 39.1" P.A. 330 sep 12.6 mag 11.00,11.50 Sp em
 
 
Coord 2000
18081-1925
Discov num
ARA 730
Comp
AB
Coord arcsec 2000
18 08 07.69 -19 24 39.1
Date first
1917
Date last
1999
Obs
6
Pa first
328
Pa last
330
P.A. Now (θ)
330°
Sep first
13.2
Sep last
12.6
Sep. Now (ρ)
12.6"
Mag pri
11.00
Mag sec
11.50
delta mag (ΔM)
0.5
Spectral class
em
Pri motion ra
-001
Sec motion ra
+004
Pri motion dec
+001
Sec motion dec
-002
Notes
rPM=1.304
This double is not physical.
 
 
18081-1925 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18081-1925 ARA 730 AB 1917 1999 6 330 12.6 11.00 11.50 0.50 <===
Show 18081-1925 AOT 68 AC 1987 1999 4 315 23.5 11.00 12.90 1.90
Show 18081-1925 AOT 68 BC 1987 1999 4 298 11.8 11.50 12.90 1.40
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
329.7
Precise sep
12.59
Constellation
Sagittarius
last precise pa
329.7
last precise sep
12.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18081-1925 ARA 730 AB 1987 3 330 12.6 11.27 11.70 180802.94-192341.7
18081-1925 ARA 730 AB 1998 4 330 12.6 11.00 11.50 D 180807.69-192439.1
18081-1925 ARA 730 AB 1999 5 330 12.6 11.00 11.50 D 180807.69-192439.1

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