20316+4059 CAN 13 AC

 
 
20h 31m 36.91s +40° 59' 09.3" P.A. 261.00 sep 12.6 mag 6.80,14.20 Sp O7I
 
 
Coord 2000 20316+4059 Discov num CAN  13 Comp AC Coord arcsec 2000 20 31 36.91 +40 59 09.3
Date first 2008 Date last 2014 Obs 4
Pa first 261 Pa last 260.8 P.A. Now (θ) 260.8°
Sep first 12.7 Sep last 12.611 Sep. Now (ρ) 12.611"
Mag pri 6.80 Mag sec 14.20 delta mag (ΔM) 7.4 Spectral class O7I (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.
 
 
20316+4059 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 31 37 +40 59 09 CAN 13 AB 2008 1 80 5.2 6.80 15.60 8.80
Show 20 31 37 +40 59 09 CAN 13 AC 2014 4 261 12.6 6.80 14.20 7.40 <===
Show 20 31 37 +40 59 09 CAN 13 AD 2008 1 351 13.9 6.80 13.00 6.20
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus