17320+0249 STT 331AC

 
 
17h 32m 02.86s +02 49' 25.4" P.A. 240 sep 50.6 mag 7.74,10.92 Sp B5V dist. 476.19 pc (1553.33 l.y.)
 
 
Coord 2000
17320+0249
Discov num
STT 331
Comp
AC
Coord arcsec 2000
17 32 02.86 +02 49 25.4
Date first
1898
Date last
2009
Obs
10
Pa first
241
Pa last
240
P.A. Now (θ)
240°
Sep first
51.0
Sep last
50.6
Sep. Now (ρ)
50.6"
Mag pri
7.74
Mag sec
10.92
delta mag (ΔM)
3.18
Spectral class
B5V (blue-white)
Pri motion ra
+001
Sec motion ra
+001
Pri motion dec
-014
Sec motion dec
-007
Notes
N (See Notes)
rPM=0.499
Nature of this double is uncertain.
 
 
17320+0249 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show V2373 Oph 17320+0249 STT 331 AB 1843 2011 80 351 1.0 7.74 8.82 1.08
Show 17320+0249 STT 331 AC 1898 2009 10 240 50.6 7.74 10.92 3.18 <===
Show 17320+0249 BU 1538 DE 1903 1903 1 166 2.6 11.50 11.50 0.00
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
239.6
Precise sep
50.63
Var name
V2373 Oph
Constellation
Ophiuchus
HIP
85812
Tycho2
0418-01447-1
HD
158976
BD
BD+02 3341
Distance
476.19
Distance ly
1553.33
last precise pa
239.6
last precise sep
50.63
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17320+0249 STT 331 AC 2000 8 239 50.7 7.74 10.92 D 173202.86+024925.4
17320+0249 STT 331 AC 2009 9 240 50.6 7.74 10.92 N D 173202.86+024925.4

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