20134+3844 BLL 47 AB (RS Cyg)

 
 
20h 13m 23.66s +38 43' 44.5" P.A. 354.00 sep 131.7 mag 8.00,7.15 Sp CII dist. 819.67 pc (2673.76 l.y.)
 
 
Coord 2000 20134+3844 Discov num BLL  47 Comp AB Coord arcsec 2000 20 13 23.66 +38 43 44.5
Date first 1879 Date last 2015 Obs 24
Pa first 355 Pa last 353.9 P.A. Now (θ) 353.9°
Sep first 132.4 Sep last 131.689 Sep. Now (ρ) 131.689"
Mag pri 8.00 Mag sec 7.15 delta mag (ΔM) 0.85 Spectral class CII (red carbon star)
Pri motion ra +009 Sec motion ra -003
Pri motion dec +002 Sec motion dec -005
Notes N (See Notes)
rPM=1.507
This double is not physical.
 
 
20134+3844 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show RS Cyg 69636 20 13 24 +38 43 44 BLL 47 AB 2015 24 354 131.7 8.00 7.15 0.85 <===
Show 69636 20 13 24 +38 43 44 BLL 47 AC 2015 21 106 154.0 8.00 9.50 1.50
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name RS Cyg Constellation Cygnus SAO 69636 HIP 99649
Tycho2 3151-01358-1 Gaia DR2 2061720267887555840 HD 192422 GC 28086
BD BD+38 3956 Distance 819.67 Distance ly 2673.76