18281-2048 RSS 32 (HD 169991)

 
 
18h 28m 08.47s -20° 48' 06.8" P.A. 223.00 sep 45.7 mag 8.94,9.85 Sp B9II dist. 2777.78 pc (9061.12 l.y.)
 
 
Coord 2000 18281-2048 Discov num RSS  32 Comp Coord arcsec 2000 18 28 08.47 -20 48 06.8
Date first 1894 Date last 2017 Obs 13
Pa first 224 Pa last 223.1 P.A. Now (θ) 223.1°
Sep first 45.4 Sep last 45.654 Sep. Now (ρ) 45.654"
Mag pri 8.94 Mag sec 9.85 delta mag (ΔM) 0.91 Spectral class B9II (blue-white)
Pri motion ra -003 Sec motion ra -001
Pri motion dec -007 Sec motion dec -003
Notes N (See Notes)
rPM=0.587
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169991 Constellation Sagittarius SAO 186850 HIP 90508
Tycho2 6278-01671-1 Gaia DR2 4090393850533483648 HD 169991 BD BD-20 5146
Distance 2777.78 Distance ly 9061.12