17210-2107 TNN   8AC

 
 
17H 21M 00.37S -21 06' 46.5" P.A. 261 SEP 10.8 MAG 3.07,13.74 SP F2V DIST. 17.36 PC (56.63 L.Y.)
 
 
Coord 2000
17210-2107
Discov num
TNN   8
Comp
AC
Coord arcsec 2000
17 21 00.37 -21 06 46.5
Date first
2004
Date last
2004
Obs
1
Pa first
261
Pa last
261
P.A. Now (θ)
261°
Sep first
10.8
Sep last
10.8
Sep. Now (ρ)
10.8"
Mag pri
3.07
Mag sec
13.74
delta mag (ΔM)
10.67
Spectral class
F2V (yellow-white)
Pri motion ra
+256
Sec motion ra
Pri motion dec
-211
Sec motion dec
Notes
N K (See Notes, K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
17210-2107 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Xi Oph 185296 17210-2107 DON 832 AB 1932 2010 16 29 3.5 4.40 8.90 4.50
Show 185296 17210-2107 TNN 8 AC 2004 2004 1 261 10.8 3.07 13.74 10.67 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
SAO
185296
HIP
84893
HD
156897
HR
6445
GC
23423
GL
Gl 670A
BD
BD-20 4731
Bayer
Xi Ophiuchi
Bayer name
Xi Oph
Flamsteed
40 Ophiuchi
Flamsteed name
40 Oph
Distance
17.36
Distance ly
56.63
last precise pa
261.1
last precise sep
10.79