18042-2230 ARA1842DE

 
 
18h 04m 13.28s -22 29' 25.1" P.A. 111 sep 12.6 mag 10.60,12.90 Sp A2V
 
 
Coord 2000
18042-2230
Discov num
ARA1842
Comp
DE
Coord arcsec 2000
18 04 13.28 -22 29 25.1
Date first
1921
Date last
1999
Obs
6
Pa first
111
Pa last
111
P.A. Now (θ)
111°
Sep first
12.6
Sep last
12.6
Sep. Now (ρ)
12.6"
Mag pri
10.60
Mag sec
12.90
delta mag (ΔM)
2.3
Spectral class
A2V (white)
Pri motion ra
+006
Sec motion ra
+011
Pri motion dec
-002
Sec motion dec
-002
Notes
rPM=0.447
Nature of this double is uncertain.
 
 
18042-2230 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 186216 18042-2230 S 698 AB 1825 2013 18 316 30.0 7.22 8.52 1.30
Show 186216 18042-2230 WFC 289 AD 1921 1999 4 13 39.1 7.22 10.74 3.52
Show 186215 18042-2230 B 1875 BC 1930 2002 3 236 0.5 8.52 13.20 4.68
Show 186215 18042-2230 ARA1842 DE 1921 1999 6 111 12.6 10.60 12.90 2.30 <===
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
110.7
Precise sep
12.575
Constellation
Sagittarius
SAO
186215
Tycho2
6263-00525-1
HD
164883
last precise pa
110.7
last precise sep
12.575
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18042-2230 ARA1842 DE 1999 4 110 12.6 10.60 12.90 D 180413.28-222925.1

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