18152-2023 BU 286 AB

 
 
18h 15m 12.97s -20° 23' 16.7" P.A. 216.00 sep 6.1 mag 5.95,13.00 Sp O9IV dist. 2325.58 pc (7586.04 l.y.)
 
 
Coord 2000 18152-2023 Discov num BU  286 Comp AB Coord arcsec 2000 18 15 12.97 -20 23 16.7
Date first 1874 Date last 2015 Obs 12
Pa first 220 Pa last 216.3 P.A. Now (θ) 216.3°
Sep first 6.0 Sep last 6.08 Sep. Now (ρ) 6.08"
Mag pri 5.95 Mag sec 13.00 delta mag (ΔM) 7.05 Spectral class O9IV (blue)
Pri motion ra +005 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
18152-2023 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 186544 18 15 13 -20 23 17 CHR 255 Aa,Ab 2019 9 156 0.1 6.50 6.90 0.40
Show 186544 18 15 13 -20 23 17 BU 286 AB 2015 12 216 6.1 5.95 13.00 7.05 <===
Show 16 Sgr 186544 18 15 13 -20 23 17 SNA 83 AC 2012 1 27 5.9 5.88 13.43 7.55
Show 186544 18 15 13 -20 23 17 SNA 83 AD 2012 1 281 6.5 5.88 13.04 7.16
Show 186544 18 15 13 -20 23 17 SNA 83 AE 2012 1 242 7.3 5.88 13.20 7.32
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 186544 HIP 89440 Tycho2 6272-00089-1
Gaia DR2 4094031138050641408 HD 167263 HR 6823 GC 24895
ADS 11191 BD BD-20 5055 Flamsteed 16 Sagittarii Flamsteed name 16 Sgr
Distance 2325.58 Distance ly 7586.04