21077+4851 ES 818 BC

 
 
21h 07m 43.23s +48° 51' 55.4" P.A. 137.00 sep 2.2 mag 11.00,12.00
 
 
Coord 2000 21077+4851 Discov num ES  818 Comp BC Coord arcsec 2000 21 07 43.23 +48 51 55.4
Date first 1909 Date last 2015 Obs 2
Pa first 81 Pa last 137.3 P.A. Now (θ) 137.3°
Sep first 2.4 Sep last 2.248 Sep. Now (ρ) 2.248"
Mag pri 11.00 Mag sec 12.00 delta mag (ΔM) 1 Spectral class
Pri motion ra -010 Sec motion ra
Pri motion dec +014 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21077+4851 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 50479 21 07 40 +48 51 19 ES 818 AB 2015 5 39 48.6 7.83 12.72 4.89
Show 21 07 43 +48 51 55 ES 818 BC 2015 2 137 2.2 11.00 12.00 1.00 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2165583022457356160