18031-0811 STF2262AC

 
 
18h 03m 04.91s -08 10' 48.9" P.A. 125 sep 100.8 mag 5.27,11.28 Sp F4IV dist. 51.33 pc (167.44 l.y.)
 
 
Coord 2000
18031-0811
Discov num
STF2262
Comp
AC
Coord arcsec 2000
18 03 04.91 -08 10 48.9
Date first
1832
Date last
2000
Obs
13
Pa first
115
Pa last
125
P.A. Now (θ)
125°
Sep first
83.1
Sep last
100.8
Sep. Now (ρ)
100.8"
Mag pri
5.27
Mag sec
11.28
delta mag (ΔM)
6.01
Spectral class
F4IV (yellow-white)
Pri motion ra
+027
Sec motion ra
+023
Pri motion dec
-031
Sec motion dec
-018
Notes
N (See Notes)
rPM=0.331
Nature of this double is uncertain.
 
 
18031-0811 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Tau Oph 142050 18031-0811 STF2262 AB 1835 2016 634 288 1.5 5.27 5.86 0.59 Y
Show 142050 18031-0811 STF2262 AC 1832 2000 13 125 100.8 5.27 11.28 6.01 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
125.4
Precise sep
100.794
Constellation
Ophiuchus
SAO
142050
HIP
88404
Tycho2
5675-00662-1
HD
164764
HR
6733
GC
24565
GL
Gl 700.1B
BD
BD-08 4549
Bayer
Tau Ophiuchi
Bayer name
Tau Oph
Flamsteed
69 Ophiuchi
Flamsteed name
69 Oph
Distance
51.33
Distance ly
167.44
last precise pa
125.4
last precise sep
100.794
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18031-0811 STF2262 AC 1999 12 125 100.3 5.27 11.28 F4IV N D 180304.91-081048.9
18031-0811 STF2262 AC 2000 13 125 100.8 5.27 11.28 F4IV N D 180304.91-081048.9

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