18020-2731 B 2850 AC

 
 
18h 02m 02.85s -27° 30' 53.4" P.A. 50.00 sep 5.8 mag 8.49,14.10 Sp B2V
 
 
Coord 2000 18020-2731 Discov num B  2850 Comp AC Coord arcsec 2000 18 02 02.85 -27 30 53.4
Date first 1927 Date last 1999 Obs 3
Pa first 55 Pa last 50.1 P.A. Now (θ) 50.1°
Sep first 5.8 Sep last 5.78 Sep. Now (ρ) 5.78"
Mag pri 8.49 Mag sec 14.10 delta mag (ΔM) 5.61 Spectral class B2V (blue-white)
Pri motion ra -013 Sec motion ra
Pri motion dec +035 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18020-2731 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 164404 18 02 03 -27 30 53 STN 40 AB 1999 19 161 2.4 8.49 9.31 0.82
Show 18 02 03 -27 30 53 B 2850 AC 1999 3 50 5.8 8.49 14.10 5.61 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Tycho2 6850-02107-1 Gaia DR2 4063117200416630272 HD 164404
DM CD-2712272