17174+1939 COU 496AB

17h 17m 24.44s +19 38' 34.6" P.A. 172 sep 0.8 mag 11.30,12.80 Sp G0

Coord 2000
17174+1939
Discov num
COU 496
Comp
AB
Coord arcsec 2000
17 17 24.44 +19 38 34.6
Date first
1970
Date last
2008
Obs
2
Pa first
160
Pa last
172
P.A. Now (θ)
172°
Sep first
0.8
Sep last
0.8
Sep. Now (ρ)
0.8"
Mag pri
11.30
Mag sec
12.80
delta mag (ΔM)
1.5
Spectral class
G0 (yellow)
Pri motion ra
-031
Sec motion ra
Pri motion dec
+021
Sec motion dec
Notes


Nature of this double is uncertain.



17174+1939 SYSTEM COMPONENTS

Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 17174+1939 COU 496 AB 1970 2008 2 172 0.8 11.30 12.80 1.50 <===
Show 17174+1939 COU 496 AC 1970 2001 4 249 7.6 11.30 12.80 1.50
Triple system
3 visible stars in this system



OTHER CATALOGS AND DESIGNATIONS

Precise pa
172.4
Precise sep
0.816
Constellation
Hercules
Tycho2
1544-01668-1
last precise pa
172.4
last precise sep
0.816




WDS HISTORIC DATA

coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17174+1939 COU 496 AB 1970 1 160 0.8 11.40 12.90 G0 171724.44+193834.6
17174+1939 COU 496 AB 2008 2 172 0.8 11.30 12.80 G0 171724.44+193834.6

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