18030-2233 ARA1838AB

 
 
18h 03m 01.88s -22 33' 15.2" P.A. 138 sep 8.3 mag 10.95,11.80 Sp B9V
 
 
Coord 2000
18030-2233
Discov num
ARA1838
Comp
AB
Coord arcsec 2000
18 03 01.88 -22 33 15.2
Date first
1921
Date last
2016
Obs
8
Pa first
124
Pa last
138
P.A. Now (θ)
138°
Sep first
7.9
Sep last
8.3
Sep. Now (ρ)
8.3"
Mag pri
10.95
Mag sec
11.80
delta mag (ΔM)
0.85
Spectral class
B9V (blue-white)
Pri motion ra
-001
Sec motion ra
+001
Pri motion dec
+009
Sec motion dec
-003
Notes
U (Proper motion indicates non-physical)
rPM=1.343
This double is not physical.
 
 
18030-2233 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18030-2233 ARA1838 AB 1921 2016 8 138 8.3 10.95 11.80 0.85 <===
Show 18030-2233 ABH 93 AD 1988 1999 4 354 34.1 10.95 14.40 3.45
Show 18030-2233 ABH 93 AE 1988 2016 5 159 40.7 10.95 14.43 3.48
Show 18030-2233 ABH 93 AF 1988 2016 5 186 66.0 10.95 12.68 1.73
Show 18030-2233 ABH 93 AG 1988 2016 5 222 24.9 10.95 13.00 2.05
Show 18030-2233 ABH 93 AH 1988 2016 5 255 28.4 10.95 12.90 1.95
Show 18030-2233 ABH 93 AI 1988 2016 5 234 73.3 10.95 15.11 4.16
Show 18030-2233 ABH 93 AJ 1988 2016 5 284 104.1 10.95 13.71 2.76
Show 18030-2233 ARA1838 BC 1921 1999 7 121 8.6 11.80 11.70 0.10
Decuple system
10 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
137.5
Precise sep
8.3
Constellation
Sagittarius
Tycho2
6842-00652-1
last precise pa
137.5
last precise sep
8.3
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18030-2233 ARA1838 AB 1998 5 138 9.1 10.95 12.30 B9V D 180301.88-223315.2
18030-2233 ARA1838 AB 1999 6 138 9.0 10.95 11.80 B9V UD 180301.88-223315.2
18030-2233 ARA1838 AB 2016 8 138 8.3 10.95 11.80 B9V U 180301.88-223315.2

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