20310+4050 CAN 26 AD

 
 
20h 31m 00.20s +40° 49' 49.8" P.A. 93.00 sep 8.4 mag 7.80,15.00 Sp O7V
 
 
Coord 2000 20310+4050 Discov num CAN  26 Comp AD Coord arcsec 2000 20 31 00.20 +40 49 49.8
Date first 2008 Date last 2008 Obs 1
Pa first 93 Pa last 92.6 P.A. Now (θ) 92.6°
Sep first 8.4 Sep last 8.44 Sep. Now (ρ) 8.44"
Mag pri 7.80 Mag sec 15.00 delta mag (ΔM) 7.2 Spectral class O7V (blue)
Pri motion ra Sec motion ra
Pri motion dec Sec motion dec
Notes K (K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
20310+4050 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 31 00 +40 49 50 CAN 26 AB 2008 1 270 2.6 7.80 15.80 8.00
Show 20 31 00 +40 49 50 CAN 26 AC 2014 4 335 8.3 7.80 12.60 4.80
Show 20 31 00 +40 49 50 CAN 26 AD 2008 1 93 8.4 7.80 15.00 7.20 <===
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus