17174+1319 HDS2444

 
 
17h 17m 24.10s +13 18' 36.8" P.A. 305 sep 0.2 mag 8.56,8.79 Sp A2 dist. 193.05 pc (629.73 l.y.)
 
 
Coord 2000
17174+1319
Discov num
HDS2444
Comp
Coord arcsec 2000
17 17 24.10 +13 18 36.8
Date first
1991
Date last
2010
Obs
4
Pa first
28
Pa last
305
P.A. Now (θ)
305°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.56
Mag sec
8.79
delta mag (ΔM)
0.23
Spectral class
A2 (white)
Pri motion ra
-002
Sec motion ra
Pri motion dec
-015
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
304.9
Precise sep
0.178
Constellation
Hercules
HIP
84584
Tycho2
0990-01673-1
HD
156497
BD
BD+13 3342
Distance
193.05
Distance ly
629.73
last precise pa
304.9
last precise sep
0.178
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17174+1319 HDS2444 1991 1 28 0.1 8.56 8.79 A2 171724.10+131836.8
17174+1319 HDS2444 2006 2 312 0.2 8.56 8.79 A2 171724.10+131836.8
17174+1319 HDS2444 2010 3 305 0.2 8.56 8.79 A2 D 171724.10+131836.8

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