18399+5815 A 251 AB (HD 173051)

 
 
18h 39m 53.58s +58° 14' 55.6" P.A. 53.00 sep 4.0 mag 8.10,11.62 Sp F2IV dist. 500 pc (1631 l.y.)
 
 
Coord 2000 18399+5815 Discov num A   251 Comp AB Coord arcsec 2000 18 39 53.58 +58 14 55.6
Date first 1901 Date last 2017 Obs 8
Pa first 56 Pa last 52.7 P.A. Now (θ) 52.7°
Sep first 3.8 Sep last 4.03 Sep. Now (ρ) 4.03"
Mag pri 8.10 Mag sec 11.62 delta mag (ΔM) 3.52 Spectral class F2IV (yellow-white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec +019 Sec motion dec +022
Notes
rPM=0.134 (< 0.3, Physical double)
This double is physical.
 
 
18399+5815 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 173051 31097 18 39 54 +58 14 56 A 251 AB 2017 8 53 4.0 8.10 11.62 3.52 <===
Show 31097 18 39 54 +58 14 56 A 251 AC 2015 6 78 13.5 8.10 14.60 6.50
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173051 Constellation Draco SAO 31097 HIP 91526
Tycho2 3917-00913-1 Gaia DR2 2154319281727210368 HD 173051 BD BD+58 1827
Distance 500 Distance ly 1631