18253+2805 HDS2604Aa,Ab

 
 
18H 25M 20.37S +28 04' 59.0" P.A. 212 SEP 0.7 MAG 8.69,11.30 SP B9 DIST. 641.03 PC (2091.04 L.Y.)
 
 
Coord 2000
18253+2805
Discov num
HDS2604
Comp
Aa,Ab
Coord arcsec 2000
18 25 20.37 +28 04 59.0
Date first
1991
Date last
2007
Obs
2
Pa first
208
Pa last
212
P.A. Now (θ)
212°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
8.69
Mag sec
11.30
delta mag (ΔM)
2.61
Spectral class
B9 (blue-white)
Pri motion ra
-003
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18253+2805 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 86027 18253+2805 HDS2604 Aa,Ab 1991 2007 2 212 0.7 8.69 11.30 2.61 <===
Show 86027 18253+2805 HO 85 AB 1885 2007 12 196 4.9 8.68 12.00 3.32
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
SAO
86027
HIP
90287
HD
169818
BD
BD+28 2996
Distance
641.03
Distance ly
2091.04
last precise pa
211.7
last precise sep
0.662