18398+2800 COU 640 AB (HD 336549)

 
 
18h 39m 47.11s +27° 59' 55.9" P.A. 90.00 sep 0.4 mag 10.30,10.60 Sp F2
 
 
Coord 2000 18398+2800 Discov num COU 640 Comp AB Coord arcsec 2000 18 39 47.11 +27 59 55.9
Date first 1971 Date last 2014 Obs 5
Pa first 96 Pa last 89.8 P.A. Now (θ) 89.8°
Sep first 0.4 Sep last 0.432 Sep. Now (ρ) 0.432"
Mag pri 10.30 Mag sec 10.60 delta mag (ΔM) 0.3 Spectral class F2 (yellow-white)
Pri motion ra -005 Sec motion ra
Pri motion dec +002 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18398+2800 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 336549 18 39 47 +27 59 56 COU 640 AB 2014 5 90 0.4 10.30 10.60 0.30 <===
Show 18 39 47 +27 59 56 SLE 97 AC 2015 7 60 10.1 10.42 12.50 2.08
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 336549 Constellation Lyra Tycho2 2115-00458-1 HD 336549