20177+3331 HJ 1500 AB (HD 228771)

 
 
20h 17m 43.96s +33 31' 18.7" P.A. 53.00 sep 17.7 mag 9.45,10.60 Sp F5
 
 
Coord 2000 20177+3331 Discov num HJ 1500 Comp AB Coord arcsec 2000 20 17 43.96 +33 31 18.7
Date first 1828 Date last 2015 Obs 17
Pa first 111 Pa last 53.3 P.A. Now (θ) 53.3°
Sep first 10.0 Sep last 17.7 Sep. Now (ρ) 17.7"
Mag pri 9.45 Mag sec 10.60 delta mag (ΔM) 1.15 Spectral class F5 (yellow-white)
Pri motion ra +015 Sec motion ra +051
Pri motion dec -031 Sec motion dec +044
Notes
rPM=1.235
This double is not physical.
 
 
20177+3331 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 228771 69767 20 17 44 +33 31 19 HJ 1500 AB 2015 17 53 17.7 9.45 10.60 1.15 <===
Show 69767 20 17 44 +33 31 19 HJ 1500 AC 2015 10 336 32.2 9.45 12.80 3.35
Show 69767 20 17 44 +33 31 19 HJ 1500 AD 2015 12 318 40.9 9.45 12.40 2.95
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 228771 Constellation Cygnus SAO 69767 Tycho2 2676-00756-1
Gaia DR2 2055377254020660864 HD 228771