17223-3108 HDO 145

 
 
17h 22m 19.52s -31 07' 54.9" P.A. 137 sep 6.4 mag 9.46,11.50 Sp B9III/IV
 
 
Coord 2000
17223-3108
Discov num
HDO 145
Comp
Coord arcsec 2000
17 22 19.52 -31 07 54.9
Date first
1868
Date last
2010
Obs
8
Pa first
140
Pa last
137
P.A. Now (θ)
137°
Sep first
5.3
Sep last
6.4
Sep. Now (ρ)
6.4"
Mag pri
9.46
Mag sec
11.50
delta mag (ΔM)
2.04
Spectral class
B9III/IV (blue-white)
Pri motion ra
-008
Sec motion ra
Pri motion dec
+004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
137
Precise sep
6.35
Constellation
Scorpius
SAO
208735
Tycho2
7362-00020-1
HD
157057
last precise pa
137
last precise sep
6.35
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17223-3108 HDO 145 1998 6 136 6.0 9.46 11.50 B9III/IV D 172219.52-310754.9
17223-3108 HDO 145 1999 7 136 6.0 9.46 11.50 B9III/IV D 172219.52-310754.9
17223-3108 HDO 145 2010 8 138 5.7 9.46 11.50 B9III/IV 172219.52-310754.9

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