17301-3343 HWE  39AB

 
 
17h 30m 05.64s -33 42' 58.9" P.A. 322 sep 4.3 mag 6.74,9.53 Sp B0.5Ib dist. 12500 pc (40775 l.y.)
 
 
Coord 2000
17301-3343
Discov num
HWE  39
Comp
AB
Coord arcsec 2000
17 30 05.64 -33 42 58.9
Date first
1876
Date last
2016
Obs
17
Pa first
320
Pa last
322
P.A. Now (θ)
322°
Sep first
3.9
Sep last
4.3
Sep. Now (ρ)
4.3"
Mag pri
6.74
Mag sec
9.53
delta mag (ΔM)
2.79
Spectral class
B0.5Ib (blue-white)
Pri motion ra
+010
Sec motion ra
+001
Pri motion dec
-013
Sec motion dec
-003
Notes
N (See Notes)
rPM=0.82
This double is not physical.
 
 
17301-3343 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 208881 17301-3343 HWE 39 AB 1876 2016 17 322 4.3 6.74 9.53 2.79 <===
Show 208881 17301-3343 HO 646 AC 1893 2016 11 314 14.1 6.74 11.30 4.56
Show 208881 17301-3343 HO 646 AD 1881 2016 15 28 59.0 6.74 9.41 2.67
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
322.3
Precise sep
4.29
Constellation
Scorpius
SAO
208881
HIP
85641
Tycho2
7379-00629-1
HD
158320
CD
CD-3312117
Distance
12500
Distance ly
40775
last precise pa
322.3
last precise sep
4.29
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17301-3343 HWE 39 AB 1998 15 322 4.0 6.74 9.53 B0.5Ib N D 173005.64-334258.9
17301-3343 HWE 39 AB 2010 16 319 4.7 6.74 9.53 B0.5Ib N D 173005.64-334258.9
17301-3343 HWE 39 AB 2016 17 322 4.3 6.74 9.53 B0.5Ib N 173005.64-334258.9

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