18179-1848 BU 299 AU

 
 
18h 17m 51.13s -18° 47' 54.6" P.A. 66.00 sep 28.5 mag 6.75,13.40 Sp B8IV dist. 202.43 pc (660.33 l.y.)
 
 
Coord 2000 18179-1848 Discov num BU  299 Comp AU Coord arcsec 2000 18 17 51.13 -18 47 54.6
Date first 1874 Date last 2006 Obs 6
Pa first 60 Pa last 66.1 P.A. Now (θ) 66.1°
Sep first 20.0 Sep last 28.51 Sep. Now (ρ) 28.51"
Mag pri 6.75 Mag sec 13.40 delta mag (ΔM) 6.65 Spectral class B8IV (blue-white)
Pri motion ra +004 Sec motion ra +022
Pri motion dec +000 Sec motion dec +006
Notes
rPM=0.832
This double is not physical.
 
 
18179-1848 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 167863 161278 18 17 51 -18 47 55 SHJ 263 AB 2019 25 10 53.7 6.75 9.25 2.50
Show 161278 18 17 51 -18 47 55 BU 299 AT 2006 6 21 21.5 6.75 12.60 5.85
Show 161278 18 17 51 -18 47 55 BU 299 AU 2006 6 66 28.5 6.75 13.40 6.65 <===
Show 161278 18 17 51 -18 47 55 BU 299 AV 2000 5 324 22.9 6.75 12.50 5.75
Show 161278 18 17 51 -18 47 55 BU 299 AW 2006 4 325 23.4 6.75 13.10 6.35
Show 18 17 52 -18 47 02 BU 299 BR 2015 7 133 10.2 9.25 12.80 3.55
Show 18 17 52 -18 47 34 BU 299 TS 2015 8 304 7.5 12.60 12.60 0.00
Show 18 17 50 -18 47 36 BU 299 VW 2006 7 317 6.8 12.48 13.10 0.62
Octuple system
8 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 161278 HIP 89659 Tycho2 6273-01475-1
Gaia DR2 4094814162127907200 HD 167863 BD BD-18 4888 Distance 202.43
Distance ly 660.33