21215+5434 ROE 91 AB

 
 
21h 21m 29.91s +54° 33' 27.8" P.A. 250.00 sep 4.9 mag 11.90,12.60
 
 
Coord 2000 21215+5434 Discov num ROE  91 Comp AB Coord arcsec 2000 21 21 29.91 +54 33 27.8
Date first 1915 Date last 2015 Obs 7
Pa first 180 Pa last 249.7 P.A. Now (θ) 249.7°
Sep first 4.8 Sep last 4.9 Sep. Now (ρ) 4.9"
Mag pri 11.90 Mag sec 12.60 delta mag (ΔM) 0.7 Spectral class
Pri motion ra -004 Sec motion ra -150
Pri motion dec -020 Sec motion dec -055
Notes
rPM=0.94
This double is not physical.
 
 
21215+5434 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 21 30 +54 33 28 ROE 91 AB 2015 7 250 4.9 11.90 12.60 0.70 <===
Show 21 21 30 +54 33 28 ROE 91 AC 2017 6 187 47.5 11.61 13.46 1.85
Show 21 21 30 +54 33 28 ROE 91 AD 2017 5 275 74.4 11.61 12.30 0.69
Show 21 21 30 +54 33 28 ROE 91 AE 2015 5 256 82.1 11.61 13.22 1.61
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 2176147817365487360