17317+3019 STF 2181 AB (HD 159118)

 
 
17h 31m 42.54s +30° 19' 05.3" P.A. 328.00 sep 33.0 mag 7.04,10.54 Sp K0
 
 
Coord 2000 17317+3019 Discov num STF2181 Comp AB Coord arcsec 2000 17 31 42.54 +30 19 05.3
Date first 1902 Date last 2015 Obs 31
Pa first 306 Pa last 328 P.A. Now (θ) 328°
Sep first 26.8 Sep last 33.023 Sep. Now (ρ) 33.023"
Mag pri 7.04 Mag sec 10.54 delta mag (ΔM) 3.5 Spectral class K0 (yellow-orange)
Pri motion ra -005 Sec motion ra +030
Pri motion dec -120 Sec motion dec -018
Notes N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=0.898
This double is not physical.
 
 
17317+3019 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 159118 66109 17 31 43 +30 19 05 STF 2181 AB 2015 31 328 33.0 7.04 10.54 3.50 <===
Show 66109 17 31 43 +30 19 05 STF 2181 AC 2015 19 218 37.7 7.04 12.55 5.51
Show 66109 17 31 43 +30 19 05 SLE 27 AD 2015 10 25 164.5 7.04 12.49 5.45
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 159118 Constellation Hercules SAO 66109 HIP 85778
Tycho2 2605-01489-1 Gaia DR2 4599180727226159872 HD 159118 GC 23750
BD BD+30 3013