19404+3121 SEI 657 AB (HD 331099)

 
 
19h 40m 21.57s +31 21' 26.4" P.A. 356.00 sep 19.3 mag 8.91,11.01 Sp F8V
 
 
Coord 2000 19404+3121 Discov num SEI 657 Comp AB Coord arcsec 2000 19 40 21.57 +31 21 26.4
Date first 1893 Date last 2017 Obs 13
Pa first 357 Pa last 356.1 P.A. Now (θ) 356.1°
Sep first 19.2 Sep last 19.313 Sep. Now (ρ) 19.313"
Mag pri 8.91 Mag sec 11.01 delta mag (ΔM) 2.1 Spectral class F8V (yellow-white)
Pri motion ra -001 Sec motion ra +001
Pri motion dec -002 Sec motion dec -001
Notes
rPM=1
This double is not physical.
 
 
19404+3121 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 68670 19 40 22 +31 21 26 COU 1163 Aa,Ab 2012 8 166 0.1 9.50 9.50 0.00
Show HD 331099 68670 19 40 22 +31 21 26 SEI 657 AB 2017 13 356 19.3 8.91 11.01 2.10 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 331099 Constellation Cygnus SAO 68670 Tycho2 2656-04841-1
Gaia DR2 2033142689388971904 HD 331099 DM BD+31 3715