20023-1157 HU 79 AB (HD 189815)

 
 
20h 02m 18.63s -11 57' 24.7" P.A. 235.00 sep 0.5 mag 10.31,10.26 Sp A8V
 
 
Coord 2000 20023-1157 Discov num HU   79 Comp AB Coord arcsec 2000 20 02 18.63 -11 57 24.7
Date first 1899 Date last 1991 Obs 11
Pa first 244 Pa last 234.9 P.A. Now (θ) 234.9°
Sep first 0.6 Sep last 0.54 Sep. Now (ρ) 0.54"
Mag pri 10.31 Mag sec 10.26 delta mag (ΔM) 0.05 Spectral class A8V (white)
Pri motion ra -001 Sec motion ra -001
Pri motion dec -011 Sec motion dec -011
Notes
Nature of this double is uncertain.
 
 
20023-1157 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 189815 163197 20 02 19 -11 57 25 HU 79 AB 1991 11 235 0.5 10.31 10.26 0.05 <===
Show 163197 20 02 19 -11 57 25 B 2882 AB,C 2005 4 289 3.8 9.53 13.90 4.37
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189815 Constellation Sagittarius SAO 163197 Tycho2 5746-00883-1
Gaia DR2 4189113428946083840 HD 189815 ADS 13268