18028+0137 BU 635 BC

18h 02m 45.80s +01° 36' 43.8" P.A. 122.00 sep 1.5 mag 9.93,10.90 Sp A5

Coord 2000 18028+0137 Discov num BU  635 Comp BC Coord arcsec 2000 18 02 45.80 +01 36 43.8
Date first 1878 Date last 2013 Obs 21
Pa first 115 Pa last 122.1 P.A. Now (θ) 122.1°
Sep first 1.6 Sep last 1.463 Sep. Now (ρ) 1.463"
Mag pri 9.93 Mag sec 10.90 delta mag (ΔM) 0.97 Spectral class A5 (white)
Pri motion ra +001 Sec motion ra
Pri motion dec -005 Sec motion dec
Notes N (See Notes)




Nature of this double is uncertain.



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

Constellation Ophiuchus Tycho2 0430-03398-1 Gaia DR2 4467845472045257344