18557-3117 PRO 219

 
 
18h 55m 38.92s -31 16' 52.3" P.A. 167 sep 12.7 mag 11.40,11.70 Sp A3Ia
 
 
Coord 2000
18557-3117
Discov num
PRO 219
Comp
Coord arcsec 2000
18 55 38.92 -31 16 52.3
Date first
1910
Date last
2015
Obs
6
Pa first
178
Pa last
167
P.A. Now (θ)
167°
Sep first
12.3
Sep last
12.7
Sep. Now (ρ)
12.7"
Mag pri
11.40
Mag sec
11.70
delta mag (ΔM)
0.3
Spectral class
A3Ia (white)
Pri motion ra
-016
Sec motion ra
+010
Pri motion dec
-001
Sec motion dec
-017
Notes
rPM=1.548
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
166.5
Precise sep
12.68
Constellation
Sagittarius
Gaia DR2
6760236123988679936
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18557-3117 PRO 219 1998 2 168 12.5 11.40 11.70 D 185538.92-311652.3
18557-3117 PRO 219 1999 3 168 12.5 11.40 11.70 D 185538.92-311652.3
18557-3117 PRO 219 2010 5 167 12.3 11.40 11.70 A3Ia 185538.92-311652.3
18557-3117 PRO 219 2015 6 167 12.7 11.40 11.70 A3Ia 185538.92-311652.3

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