18106-7511 HJ 4999 (HD 164643)

 
 
18h 10m 33.96s -75° 11' 17.1" P.A. 172.00 sep 13.1 mag 7.68,8.61 Sp B9V+A0/1 dist. 240.96 pc (786.01 l.y.)
 
 
Coord 2000 18106-7511 Discov num HJ 4999 Comp Coord arcsec 2000 18 10 33.96 -75 11 17.1
Date first 1835 Date last 2015 Obs 20
Pa first 174 Pa last 171.6 P.A. Now (θ) 171.6°
Sep first 13.0 Sep last 13.12 Sep. Now (ρ) 13.12"
Mag pri 7.68 Mag sec 8.61 delta mag (ΔM) 0.93 Spectral class B9V+A0/1 (blue-white/white)
Pri motion ra +010 Sec motion ra +007
Pri motion dec -010 Sec motion dec -022
Notes Y (Parallax indicates components are non-physical)
rPM=0.536
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 164643 Constellation Apus SAO 257566 HIP 89050
Tycho2 9445-02573-1 Gaia DR2 6414640828898656640 HD 164643 GC 24666
CP CP-75 1409 Distance 240.96 Distance ly 786.01