17157-1811 HJ 4932AC

 
 
17h 15m 43.28s -18 10' 50.5" P.A. 227 sep 10.5 mag 9.62,10.60 Sp A3II/III
 
 
Coord 2000
17157-1811
Discov num
HJ 4932
Comp
AC
Coord arcsec 2000
17 15 43.28 -18 10 50.5
Date first
1879
Date last
2016
Obs
11
Pa first
225
Pa last
227
P.A. Now (θ)
227°
Sep first
10.5
Sep last
10.5
Sep. Now (ρ)
10.5"
Mag pri
9.62
Mag sec
10.60
delta mag (ΔM)
0.98
Spectral class
A3II/III (white)
Pri motion ra
+005
Sec motion ra
+008
Pri motion dec
-003
Sec motion dec
-006
Notes
rPM=0.424
Nature of this double is uncertain.
 
 
17157-1811 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 17157-1811 WHC 14 AB 1884 2016 10 291 1.2 9.62 9.70 0.08
Show 17157-1811 HJ 4932 AC 1879 2016 11 227 10.5 9.62 10.60 0.98 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
226.5
Precise sep
10.468
Constellation
Ophiuchus
Tycho2
6237-01091-1
HD
155992
last precise pa
226.5
last precise sep
10.468
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17157-1811 HJ 4932 AC 1999 9 227 10.3 9.62 10.60 A3II/III D 171543.28-181050.5
17157-1811 HJ 4932 AC 2010 11 227 10.1 9.62 10.60 A3II/III 171543.28-181050.5
17157-1811 HJ 4932 AC 2016 11 227 10.5 9.62 10.60 A3II/III 171543.28-181050.5

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