20423+4549 BKO 158 AF

 
 
20h 42m 20.31s +45° 49' 24.5" P.A. 143.00 sep 41.0 mag 7.66,12.20 Sp G2V dist. 54.14 pc (176.6 l.y.)
 
 
Coord 2000 20423+4549 Discov num BKO 158 Comp AF Coord arcsec 2000 20 42 20.31 +45 49 24.5
Date first 1998 Date last 2015 Obs 11
Pa first 146 Pa last 143.1 P.A. Now (θ) 143.1°
Sep first 42.9 Sep last 40.993 Sep. Now (ρ) 40.993"
Mag pri 7.66 Mag sec 12.20 delta mag (ΔM) 4.54 Spectral class G2V (yellow)
Pri motion ra -056 Sec motion ra -009
Pri motion dec -189 Sec motion dec +002
Notes N W (See Notes, )
rPM=0.998
This double is not physical.
 
 
20423+4549 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 197488 49960 20 42 20 +45 49 24 STT 411 AB 2015 50 349 31.8 7.66 10.58 2.92
Show 49960 20 42 20 +45 49 24 WAL 132 AC 2015 16 357 71.2 7.66 10.23 2.57
Show 49960 20 42 20 +45 49 24 BKO 158 AF 2015 11 143 41.0 7.66 12.20 4.54 <===
Show 20 42 20 +45 49 53 WAL 132 BC 2015 15 4 40.1 10.58 10.23 0.35
Show 20 42 20 +45 49 53 CTT 15 BD 2015 13 178 86.6 10.58 10.60 0.02
Show 20 42 20 +45 49 53 CTT 15 BE 2015 12 141 87.9 10.58 10.55 0.03
Show 20 42 25 +45 48 44 BKO 158 EF 2015 9 281 24.9 10.55 12.20 1.65
Show 20 42 25 +45 48 44 BKO 158 EG 2015 7 221 28.7 10.55 14.00 3.45
Show 20 42 25 +45 48 44 BKO 158 EH 2015 7 340 51.6 10.55 12.60 2.05
Show 20 42 25 +45 48 44 BKO 158 EI 2014 6 236 39.6 10.55 13.60 3.05
Ninefold system
9 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 49960 HIP 102189 Tycho2 3574-02567-1
Gaia DR2 2070448844010046592 HD 197488 BD BD+45 3245 Distance 54.14
Distance ly 176.6