18258-2220 ARA1887

 
 
18h 25m 50.47s -22 19' 25.6" P.A. 187 sep 6 mag 12.27,12.66
 
 
Coord 2000
18258-2220
Discov num
ARA1887
Comp
Coord arcsec 2000
18 25 50.47 -22 19 25.6
Date first
1920
Date last
1999
Obs
4
Pa first
188
Pa last
187
P.A. Now (θ)
187°
Sep first
5.9
Sep last
6.0
Sep. Now (ρ)
6"
Mag pri
12.27
Mag sec
12.66
delta mag (ΔM)
0.39
Spectral class
Pri motion ra
+001
Sec motion ra
-011
Pri motion dec
-016
Sec motion dec
-063
Notes
B (Blue magnitudes)
rPM=0.758
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
187.3
Precise sep
5.995
Constellation
Sagittarius
last precise pa
187.3
last precise sep
5.995
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18258-2220 ARA1887 1928 2 180 5.6 12.27 12.66 B 182550.46-221924.2
18258-2220 ARA1887 1999 3 187 6.0 12.27 12.66 B 182550.47-221925.6
18258-2220 ARA1887 2010 5 190 6.6 12.27 12.66 B 182550.47-221925.6

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