18521+2431 COU 510

 
 
18h 52m 07.71s +24 30' 58.6" P.A. 175 sep 0.2 mag 8.90,8.90 Sp B9
 
 
Coord 2000
18521+2431
Discov num
COU 510
Comp
Coord arcsec 2000
18 52 07.71 +24 30 58.6
Date first
1970
Date last
2007
Obs
13
Pa first
153
Pa last
175
P.A. Now (θ)
175°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.90
Mag sec
8.90
delta mag (ΔM)
0
Spectral class
B9 (blue-white)
Pri motion ra
+006
Sec motion ra
Pri motion dec
-011
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
175.4
Precise sep
0.176
Constellation
Hercules
last precise pa
175.4
last precise sep
0.176
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18521+2431 COU 510 1996 12 166 0.2 8.90 8.90 B9 N 185207.71+243058.6
18521+2431 COU 510 2007 13 175 0.2 8.90 8.90 B9 N 185207.71+243058.6

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