21105+4742 BU 159 AB (HD 201836)

 
 
21h 10m 30.96s +47° 41' 32.0" P.A. 313.00 sep 1.2 mag 6.55,9.07 Sp B6IV dist. 423.73 pc (1382.21 l.y.)
 
 
Coord 2000 21105+4742 Discov num BU  159 Comp AB Coord arcsec 2000 21 10 30.96 +47 41 32.0
Date first 1873 Date last 2014 Obs 27
Pa first 330 Pa last 313.3 P.A. Now (θ) 313.3°
Sep first 1.2 Sep last 1.224 Sep. Now (ρ) 1.224"
Mag pri 6.55 Mag sec 9.07 delta mag (ΔM) 2.52 Spectral class B6IV (blue-white)
Pri motion ra -004 Sec motion ra -004
Pri motion dec +001 Sec motion dec +001
Notes N (See Notes)
Nature of this double is uncertain.
 
 
21105+4742 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 201836 50536 21 10 31 +47 41 32 BU 159 AB 2014 27 313 1.2 6.55 9.07 2.52 <===
Show 50536 21 10 31 +47 41 32 STTA 215 AC 2012 22 189 136.7 6.55 7.52 0.97
Show 50536 21 10 31 +47 41 32 BU 159 AD 2015 7 145 14.8 6.55 13.50 6.95
Show 50536 21 10 31 +47 41 32 LV 23 AE 2015 3 338 46.8 6.55 13.50 6.95
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201836 Constellation Cygnus SAO 50536 HIP 104537
Tycho2 3592-07442-1 Gaia DR2 2165256123904303488 HD 201836 HR 8107
GC 29610 ADS 14720 BD BD+47 3322 Distance 423.73
Distance ly 1382.21