17171+4540 DVG   2

 
 
17h 17m 08.07s +45 39' 31.9" P.A. 256 sep 22.6 mag 11.70,11.80
 
 
Coord 2000
17171+4540
Discov num
DVG   2
Comp
Coord arcsec 2000
17 17 08.07 +45 39 31.9
Date first
1893
Date last
2015
Obs
12
Pa first
257
Pa last
256
P.A. Now (θ)
256°
Sep first
22.7
Sep last
22.6
Sep. Now (ρ)
22.6"
Mag pri
11.70
Mag sec
11.80
delta mag (ΔM)
0.1
Spectral class
Pri motion ra
+012
Sec motion ra
+122
Pri motion dec
-029
Sec motion dec
-033
Notes
V R (Proper motion indicates physical, Red magnitudes)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
46608
Tycho2
3508-01107-1
last precise pa
256.1
last precise sep
22.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17171+4540 DVG 2 2012 6 257 22.8 11.80 11.90 V 171708.70+453931.9
17171+4540 DVG 2 2015 12 256 22.6 11.70 11.80 V R 171708.07+453931.9

If you need more information about this double, apply for a data request form to the WDS.