17178+2844 S   686

 
 
17H 17M 48.11S +28 44' 00.4" P.A. 4 SEP 51 MAG 8.17,9.30 SP A2 DIST. 258.4 PC (842.9 L.Y.)
 
 
Coord 2000
17178+2844
Discov num
S   686
Comp
Coord arcsec 2000
17 17 48.11 +28 44 00.4
Date first
1825
Date last
2014
Obs
22
Pa first
4
Pa last
4
P.A. Now (θ)
Sep first
55.0
Sep last
51.0
Sep. Now (ρ)
51"
Mag pri
8.17
Mag sec
9.30
delta mag (ΔM)
1.13
Spectral class
A2 (white)
Pri motion ra
-002
Sec motion ra
+001
Pri motion dec
-005
Sec motion dec
-031
Notes
N (See Notes)
rPM=0.844
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
84986
HIP
84614
Tycho2
2073-00483-1
HD
156680
BD
BD+28 2713
Distance
258.4
Distance ly
842.9
last precise pa
3.9
last precise sep
51