20205+4351 BU 1207 AB

 
 
20h 20m 27.98s +43° 51' 16.3" P.A. 211.00 sep 4.8 mag 6.85,14.40 Sp WC6/7 dist. 4000 pc (13048 l.y.)
 
 
Coord 2000 20205+4351 Discov num BU 1207 Comp AB Coord arcsec 2000 20 20 27.98 +43 51 16.3
Date first 1890 Date last 2015 Obs 10
Pa first 218 Pa last 210.6 P.A. Now (θ) 210.6°
Sep first 5.8 Sep last 4.783 Sep. Now (ρ) 4.783"
Mag pri 6.85 Mag sec 14.40 delta mag (ΔM) 7.55 Spectral class WC6/7 (Wolf-Rayet)
Pri motion ra -003 Sec motion ra
Pri motion dec -008 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
20205+4351 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show V1687 Cyg 49491 20 20 28 +43 51 16 IOT 2 Aa,Ab 2019 11 152 0.0 6.10 6.30 0.20 Y
Show 49491 20 20 28 +43 51 16 BU 1207 AB 2015 10 211 4.8 6.85 14.40 7.55 <===
Show 49491 20 20 28 +43 51 16 TRN 29 AC 2001 1 202 2.3 6.85 16.00 9.15
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V1687 Cyg Constellation Cygnus SAO 49491 HIP 100287
Tycho2 3164-01678-1 Gaia DR2 2081261372633822592 HD 193793 GC 28303
BD BD+43 3571 Distance 4000 Distance ly 13048