18253+2805 HO 85 AB (HD 169818)

 
 
18h 25m 20.37s +28° 04' 59.0" P.A. 196.00 sep 4.9 mag 8.68,12.00 Sp B9 dist. 641.03 pc (2091.04 l.y.)
 
 
Coord 2000 18253+2805 Discov num HO   85 Comp AB Coord arcsec 2000 18 25 20.37 +28 04 59.0
Date first 1885 Date last 2016 Obs 14
Pa first 196 Pa last 195.5 P.A. Now (θ) 195.5°
Sep first 4.7 Sep last 4.862 Sep. Now (ρ) 4.862"
Mag pri 8.68 Mag sec 12.00 delta mag (ΔM) 3.32 Spectral class B9 (blue-white)
Pri motion ra +001 Sec motion ra
Pri motion dec +007 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18253+2805 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 86027 18 25 20 +28 04 59 HDS 2604 Aa,Ab 2016 4 212 0.7 8.69 11.30 2.61
Show HD 169818 86027 18 25 20 +28 04 59 HO 85 AB 2016 14 196 4.9 8.68 12.00 3.32 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169818 Constellation Hercules SAO 86027 HIP 90287
Tycho2 2114-00276-1 Gaia DR2 4586495863438223616 HD 169818 ADS 11338
BD BD+28 2996 Distance 641.03 Distance ly 2091.04