17407+3117 HDS2501Aa,Ab

 
 
17h 40m 41.23s +31 17' 15.6" P.A. 76 sep 0.8 mag 6.50,10.30 Sp K0III dist. 130.38 pc (425.3 l.y.)
 
 
Coord 2000
17407+3117
Discov num
HDS2501
Comp
Aa,Ab
Coord arcsec 2000
17 40 41.23 +31 17 15.6
Date first
1991
Date last
2009
Obs
2
Pa first
77
Pa last
76
P.A. Now (θ)
76°
Sep first
0.8
Sep last
0.8
Sep. Now (ρ)
0.8"
Mag pri
6.50
Mag sec
10.30
delta mag (ΔM)
3.8
Spectral class
K0III (yellow-orange)
Pri motion ra
-059
Sec motion ra
Pri motion dec
-075
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
17407+3117 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 66243 17407+3117 HDS2501 Aa,Ab 1991 2009 2 76 0.8 6.50 10.30 3.80 <===
Show 66243 17407+3117 STTA157 AB 1874 2015 31 106 118.3 6.43 7.92 1.49
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
76
Precise sep
0.807
Constellation
Hercules
SAO
66243
HIP
86506
Tycho2
2606-01359-1
HD
160822
HR
6591
BD
BD+31 3076
Distance
130.38
Distance ly
425.3
last precise pa
76
last precise sep
0.807
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17407+3117 HDS2501 Aa,Ab 1991 1 77 0.8 6.50 10.30 K0III D 174041.23+311715.6
17407+3117 HDS2501 Aa,Ab 2009 2 76 0.8 6.50 10.30 K0III N D 174041.23+311715.6

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