20215+3035 ARY 4 AB (HD 193857)

 
 
20h 21m 29.56s +30 35' 25.0" P.A. 287.00 sep 134.9 mag 6.78,8.54 Sp Am dist. 114.29 pc (372.81 l.y.)
 
 
Coord 2000 20215+3035 Discov num ARY   4 Comp AB Coord arcsec 2000 20 21 29.56 +30 35 25.0
Date first 1900 Date last 2015 Obs 17
Pa first 288 Pa last 286.5 P.A. Now (θ) 286.5°
Sep first 135.1 Sep last 134.857 Sep. Now (ρ) 134.857"
Mag pri 6.78 Mag sec 8.54 delta mag (ΔM) 1.76 Spectral class Am (white)
Pri motion ra +012 Sec motion ra +008
Pri motion dec +022 Sec motion dec +010
Notes
rPM=0.505
Nature of this double is uncertain.
 
 
20215+3035 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 193857 69888 20 21 30 +30 35 25 ARY 4 AB 2015 17 287 134.9 6.78 8.54 1.76 <===
Show 69879 20 21 20 +30 36 04 BU 1259 Ba,Bb 1991 26 191 0.2 9.06 9.60 0.54
Show 69879 20 21 20 +30 36 04 BU 1259 BC 2012 9 356 10.3 8.54 13.50 4.96
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 193857 Constellation Cygnus SAO 69888 HIP 100384
Tycho2 2672-02202-1 Gaia DR2 1861588192186372864 HD 193857 GC 28318
BD BD+30 3998 Distance 114.29 Distance ly 372.81