21028+4551 BU 1138 CE

 
 
21h 02m 40.75s +45° 53' 05.1" P.A. 249.00 sep 23.6 mag 7.82,12.38 Sp K2 dist. 19.47 pc (63.51 l.y.)
 
 
Coord 2000 21028+4551 Discov num BU 1138 Comp CE Coord arcsec 2000 21 02 40.75 +45 53 05.1
Date first 1908 Date last 2003 Obs 8
Pa first 68 Pa last 249.3 P.A. Now (θ) 249.3°
Sep first 17.1 Sep last 23.634 Sep. Now (ρ) 23.634"
Mag pri 7.82 Mag sec 12.38 delta mag (ΔM) 4.56 Spectral class K2 (yellow-orange)
Pri motion ra +404 Sec motion ra +076
Pri motion dec +141 Sec motion dec +022
Notes N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=0.815
This double is not physical.
 
 
21028+4551 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 50390 21 02 49 +45 50 56 BU 1138 AB 2006 57 172 0.1 7.10 7.30 0.20 Y
Show HD 200595 50390 21 02 49 +45 50 56 BU 1138 AC 2012 21 330 152.1 6.46 7.82 1.36
Show 50388 21 02 41 +45 53 05 KUI 104 CD 2017 17 85 2.7 7.82 13.40 5.58
Show 50388 21 02 41 +45 53 05 BU 1138 CE 2003 8 249 23.6 7.82 12.38 4.56 <===
Show 50388 21 02 41 +45 53 05 FYM 331 CF 2017 6 39 11.9 7.82 15.70 7.88
Show 50388 21 02 41 +45 53 05 HLA 30 CG 2016 1 148 7.3 5.40 14.30 8.90
Septuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V2436 Cyg Constellation Cygnus SAO 50388 HIP 103859
Tycho2 3588-03634-1 HD 200560 GL Gl 816.1A BD BD+45 3371
Distance 19.47 Distance ly 63.51