17215+5532 ES 2656

 
 
17h 21m 40.66s +55 31' 43.7" P.A. 64 sep 11.1 mag 10.60,12.50
 
 
Coord 2000
17215+5532
Discov num
ES 2656
Comp
Coord arcsec 2000
17 21 40.66 +55 31 43.7
Date first
1919
Date last
2010
Obs
6
Pa first
64
Pa last
64
P.A. Now (θ)
64°
Sep first
10.8
Sep last
11.1
Sep. Now (ρ)
11.1"
Mag pri
10.60
Mag sec
12.50
delta mag (ΔM)
1.9
Spectral class
Pri motion ra
-022
Sec motion ra
-001
Pri motion dec
+050
Sec motion dec
+048
Notes
rPM=0.386
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
63.7
Precise sep
11.05
Constellation
Draco
Tycho2
3892-00297-1
last precise pa
63.7
last precise sep
11.05
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17215+5532 ES 2656 2000 2 64 11.1 10.60 12.50 D 172140.66+553143.7
17215+5532 ES 2656 2008 3 63 11.5 10.60 12.50 D 172140.66+553143.7
17215+5532 ES 2656 2010 6 64 11.1 10.60 12.50 172140.66+553143.7

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