17555-3146 PRO 189

 
 
17h 55m 32.00s -31 46' 16.4" P.A. 220 sep 4 mag 12.50,13.00
 
 
Coord 2000
17555-3146
Discov num
PRO 189
Comp
Coord arcsec 2000
17 55 32.00 -31 46 16.4
Date first
1909
Date last
2000
Obs
4
Pa first
218
Pa last
220
P.A. Now (θ)
220°
Sep first
3.4
Sep last
4.0
Sep. Now (ρ)
4"
Mag pri
12.50
Mag sec
13.00
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
+011
Sec motion ra
-013
Pri motion dec
-003
Sec motion dec
-026
Notes
rPM=1.144
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
220.2
Precise sep
3.98
Constellation
Scorpius
Tycho2
7378-00750-1
HD
318616
last precise pa
220.2
last precise sep
3.98
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17555-3146 PRO 189 1909 1 218 3.4 10.65 11.20 175533.78-314613.2
17555-3146 PRO 189 2000 2 220 4.0 10.65 11.20 175532.00-314616.4

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