17387+1840 SLO   1AB

 
 
17h 38m 39.15s +18 40' 03.5" P.A. 219 sep 1.7 mag 11.69,12.30
 
 
Coord 2000
17387+1840
Discov num
SLO   1
Comp
AB
Coord arcsec 2000
17 38 39.15 +18 40 03.5
Date first
1912
Date last
1991
Obs
2
Pa first
218
Pa last
219
P.A. Now (θ)
219°
Sep first
1.7
Sep last
1.7
Sep. Now (ρ)
1.7"
Mag pri
11.69
Mag sec
12.30
delta mag (ΔM)
0.61
Spectral class
Pri motion ra
+008
Sec motion ra
Pri motion dec
+004
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
17387+1840 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 17387+1840 SLO 1 AB 1912 1991 2 219 1.7 11.69 12.30 0.61 <===
Show 17387+1840 SLO 1 AC 1895 2001 7 149 146.0 11.12 11.94 0.82
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
218.5
Precise sep
1.7
Constellation
Hercules
Tycho2
1555-01013-1
last precise pa
218.5
last precise sep
1.7
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17387+1840 SLO 1 AB 1991 2 219 1.7 11.69 12.30 N 173839.18+184004.1

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