18130-2217 ARA1855

 
 
18h 12m 58.77s -22 16' 49.0" P.A. 121 sep 10.5 mag 11.89,11.41
 
 
Coord 2000
18130-2217
Discov num
ARA1855
Comp
Coord arcsec 2000
18 12 58.77 -22 16 49.0
Date first
1920
Date last
2000
Obs
7
Pa first
123
Pa last
121
P.A. Now (θ)
121°
Sep first
10.4
Sep last
10.5
Sep. Now (ρ)
10.5"
Mag pri
11.89
Mag sec
11.41
delta mag (ΔM)
0.48
Spectral class
Pri motion ra
-003
Sec motion ra
-002
Pri motion dec
-009
Sec motion dec
-004
Notes
rPM=0.537
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
120.6
Precise sep
10.487
Constellation
Sagittarius
Tycho2
6276-00657-1
last precise pa
120.6
last precise sep
10.487
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18130-2217 ARA1855 1923 2 124 11.0 11.89 12.00 181258.77-221649.0
18130-2217 ARA1855 1998 3 121 10.4 11.89 12.00 181258.77-221649.0
18130-2217 ARA1855 2000 5 121 10.5 11.89 12.00 181258.77-221649.0

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