19575+2018 BU 425 AD

 
 
19h 57m 32.28s +20 17' 40.1" P.A. 84.00 sep 29.1 mag 9.17,13.12 Sp B9 dist. 540.54 pc (1763.24 l.y.)
 
 
Coord 2000 19575+2018 Discov num BU  425 Comp AD Coord arcsec 2000 19 57 32.28 +20 17 40.1
Date first 2000 Date last 2015 Obs 4
Pa first 84 Pa last 84.3 P.A. Now (θ) 84.3°
Sep first 29.8 Sep last 29.14 Sep. Now (ρ) 29.14"
Mag pri 9.17 Mag sec 13.12 delta mag (ΔM) 3.95 Spectral class B9 (blue-white)
Pri motion ra +004 Sec motion ra +056
Pri motion dec -001 Sec motion dec +012
Notes
rPM=0.936
This double is not physical.
 
 
19575+2018 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 189068 19 57 32 +20 17 40 BU 425 AB 2016 58 240 1.4 9.17 9.24 0.07
Show 19 57 32 +20 17 40 BU 425 AC 2015 14 40 22.0 9.17 12.61 3.44
Show 19 57 32 +20 17 40 BU 425 AD 2015 4 84 29.1 9.17 13.12 3.95 <===
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagitta HIP 98216 Tycho2 1624-00669-1 Gaia DR2 1823377444393685248
HD 189068 BD BD+19 4221 Distance 540.54 Distance ly 1763.24