17177+3537 COU 993Aa,Ab

 
 
17h 17m 44.24s +35 37' 02.9" P.A. 107 sep 1.1 mag 9.20,11.30 Sp A2
 
 
Coord 2000
17177+3537
Discov num
COU 993
Comp
Aa,Ab
Coord arcsec 2000
17 17 44.24 +35 37 02.9
Date first
1973
Date last
2008
Obs
6
Pa first
111
Pa last
107
P.A. Now (θ)
107°
Sep first
0.9
Sep last
1.1
Sep. Now (ρ)
1.1"
Mag pri
9.20
Mag sec
11.30
delta mag (ΔM)
2.1
Spectral class
A2 (white)
Pri motion ra
+005
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
17177+3537 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 65922 17177+3537 COU 993 Aa,Ab 1973 2008 6 107 1.1 9.20 11.30 2.10 <===
Show 65922 17177+3537 HO 67 AB 1884 2002 12 275 8.0 9.20 12.40 3.20
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
107
Precise sep
1.073
Constellation
Hercules
SAO
65922
Tycho2
2600-00654-1
HD
156712
last precise pa
107
last precise sep
1.073
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17177+3537 COU 993 Aa,Ab 1998 3 110 1.1 8.90 11.30 A2 171755.58+353249.3
17177+3537 COU 993 Aa,Ab 2008 6 107 1.1 9.20 11.30 A2 171744.24+353702.9

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