17131+5408 STF2146AC

 
 
17h 13m 06.26s +54 08' 20.9" P.A. 235 sep 89.3 mag 6.95,8.87 Sp A9III dist. 108.81 pc (354.94 l.y.)
 
 
Coord 2000
17131+5408
Discov num
STF2146
Comp
AC
Coord arcsec 2000
17 13 06.26 +54 08 20.9
Date first
1901
Date last
2016
Obs
25
Pa first
231
Pa last
235
P.A. Now (θ)
235°
Sep first
88.8
Sep last
89.3
Sep. Now (ρ)
89.3"
Mag pri
6.95
Mag sec
8.87
delta mag (ΔM)
1.92
Spectral class
A9III (white)
Pri motion ra
+001
Sec motion ra
-020
Pri motion dec
+066
Sec motion dec
+105
Notes
rPM=0.414
Nature of this double is uncertain.
 
 
17131+5408 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 30299 17131+5408 STF2146 AB 1828 2015 31 224 2.6 6.92 8.80 1.88
Show 30299 17131+5408 STF2146 AC 1901 2016 25 235 89.3 6.95 8.87 1.92 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
234.8
Precise sep
89.258
Constellation
Draco
SAO
30299
HIP
84236
Tycho2
3887-01068-1
HD
156162
BD
BD+54 1869
Distance
108.81
Distance ly
354.94
last precise pa
234.8
last precise sep
89.258
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17131+5408 STF2146 AC 1999 16 233 89.2 6.95 8.87 D 171306.26+540820.9
17131+5408 STF2146 AC 2009 17 233 88.4 6.95 8.87 D 171306.26+540820.9
17131+5408 STF2146 AC 2012 19 234 89.4 6.95 8.87 A9III 171306.26+540820.9
17131+5408 STF2146 AC 2013 22 233 88.4 6.95 8.87 A9III 171306.26+540820.9
17131+5408 STF2146 AC 2016 25 235 89.3 6.95 8.87 A9III 171306.26+540820.9

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