18028+0137 BU 635 AB (HD 164812)

 
 
18h 02m 49.73s +01° 36' 07.6" P.A. 302.00 sep 68.8 mag 8.63,9.93 Sp A5
 
 
Coord 2000 18028+0137 Discov num BU  635 Comp AB Coord arcsec 2000 18 02 49.73 +01 36 07.6
Date first 1877 Date last 2017 Obs 21
Pa first 303 Pa last 302.3 P.A. Now (θ) 302.3°
Sep first 68.0 Sep last 68.77 Sep. Now (ρ) 68.77"
Mag pri 8.63 Mag sec 9.93 delta mag (ΔM) 1.3 Spectral class A5 (white)
Pri motion ra +002 Sec motion ra +002
Pri motion dec -007 Sec motion dec -005
Notes N (See Notes)
rPM=0.275 (< 0.3, Physical double)
This double is physical.
 
 
18028+0137 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 164812 123058 18 02 50 +01 36 08 BU 635 AB 2017 21 302 68.8 8.63 9.93 1.30 <===
Show 18 02 46 +01 36 44 BU 635 BC 2013 21 122 1.5 9.93 10.90 0.97
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 164812 Constellation Ophiuchus SAO 123058 Tycho2 0430-02917-1
Gaia DR2 4467845368966034304 HD 164812 DM BD+01 3566