18365-2354 ARA2240AB

 
 
18h 36m 30.53s -23 53' 57.9" P.A. 317 sep 10.4 mag 11.20,11.70
 
 
Coord 2000
18365-2354
Discov num
ARA2240
Comp
AB
Coord arcsec 2000
18 36 30.53 -23 53 57.9
Date first
1928
Date last
1999
Obs
4
Pa first
320
Pa last
317
P.A. Now (θ)
317°
Sep first
11.1
Sep last
10.4
Sep. Now (ρ)
10.4"
Mag pri
11.20
Mag sec
11.70
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
+014
Sec motion ra
+029
Pri motion dec
+000
Sec motion dec
-008
Notes
R (Red magnitudes)
rPM=0.565
Nature of this double is uncertain.
 
 
18365-2354 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18365-2354 ARA2240 AB 1928 1999 4 317 10.4 11.20 11.70 0.50 <===
Show 18365-2354 ARA2240 BC 1928 1999 4 3 12.6 11.25 12.00 0.75
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
317.3
Precise sep
10.406
Constellation
Sagittarius
last precise pa
317.3
last precise sep
10.406
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18365-2354 ARA2240 AB 1999 2 317 10.3 12.90 13.20 D 183630.53-235357.9
18365-2354 ARA2240 AB 2010 5 318 9.8 11.20 11.70 R 183630.53-235357.9

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