18517+1331 STF2409AB

 
 
18h 51m 43.74s +13 31' 06.9" P.A. 22 sep 0.9 mag 8.46,9.64 Sp G5 dist. 261.1 pc (851.71 l.y.)
 
 
Coord 2000
18517+1331
Discov num
STF2409
Comp
AB
Coord arcsec 2000
18 51 43.74 +13 31 06.9
Date first
1829
Date last
2015
Obs
47
Pa first
33
Pa last
22
P.A. Now (θ)
22°
Sep first
1.0
Sep last
0.9
Sep. Now (ρ)
0.9"
Mag pri
8.46
Mag sec
9.64
delta mag (ΔM)
1.18
Spectral class
G5 (yellow)
Pri motion ra
+012
Sec motion ra
+012
Pri motion dec
+000
Sec motion dec
+000
Notes
Nature of this double is uncertain.
 
 
18517+1331 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 104190 18517+1331 STF2409 AB 1829 2015 47 22 0.9 8.46 9.64 1.18 <===
Show 104190 18517+1331 STF2409 AC 1897 2014 8 196 33.8 8.46 12.96 4.50
Show 104190 18517+1331 WAL 96 AB,D 1944 1999 2 291 72.6 8.15 13.10 4.95
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
21.6
Precise sep
0.94
Constellation
Hercules
SAO
104190
HIP
92565
Tycho2
1038-00509-1
HD
174791
BD
BD+13 3783
Distance
261.1
Distance ly
851.71
last precise pa
21.6
last precise sep
0.94
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18517+1331 STF2409 AB 2005 45 21 1.0 8.46 9.64 G5 D 185143.74+133106.9
18517+1331 STF2409 AB 2008 46 18 1.0 8.46 9.64 G5 D 185143.74+133106.9
18517+1331 STF2409 AB 2011 47 20 1.0 8.46 9.64 G5 185143.74+133106.9
18517+1331 STF2409 AB 2015 47 22 0.9 8.46 9.64 G5 185143.74+133106.9

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