18242+4228 COU 1788 AB (HD 169778)

 
 
18h 24m 10.94s +42° 28' 01.0" P.A. 142.00 sep 3.0 mag 6.70,11.40 Sp A2 dist. 110.13 pc (359.24 l.y.)
 
 
Coord 2000 18242+4228 Discov num COU1788 Comp AB Coord arcsec 2000 18 24 10.94 +42 28 01.0
Date first 1979 Date last 2016 Obs 4
Pa first 139 Pa last 142 P.A. Now (θ) 142°
Sep first 2.1 Sep last 2.994 Sep. Now (ρ) 2.994"
Mag pri 6.70 Mag sec 11.40 delta mag (ΔM) 4.7 Spectral class A2 (white)
Pri motion ra +001 Sec motion ra
Pri motion dec -017 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18242+4228 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 47465 18 24 11 +42 28 01 GII 266 Aa,Ab 2014 1 124 0.1 7.50 7.50 0.00
Show HD 169778 47465 18 24 11 +42 28 01 COU 1788 AB 2016 4 142 3.0 6.70 11.40 4.70 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169778 Constellation Lyra SAO 47465 HIP 90187
Tycho2 3112-01093-1 HD 169778 GC 25141 BD BD+42 3074
Distance 110.13 Distance ly 359.24