16397-4921 HJ 4873 AB (HD 149855)

 
 
16h 39m 43.61s -49° 21' 01.8" P.A. 69.00 sep 30.4 mag 9.07,9.55 Sp B1/2III
 
 
Coord 2000 16397-4921 Discov num HJ 4873 Comp AB Coord arcsec 2000 16 39 43.61 -49 21 01.8
Date first 1836 Date last 2015 Obs 9
Pa first 72 Pa last 69.2 P.A. Now (θ) 69.2°
Sep first 31.8 Sep last 30.441 Sep. Now (ρ) 30.441"
Mag pri 9.07 Mag sec 9.55 delta mag (ΔM) 0.48 Spectral class B1/2III (blue-white)
Pri motion ra +003 Sec motion ra -008
Pri motion dec -005 Sec motion dec -002
Notes N (See Notes)
rPM=1.383
This double is not physical.
 
 
16397-4921 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 149855 227012 16 39 44 -49 21 02 HJ 4873 AB 2015 9 69 30.4 9.07 9.55 0.48 <===
Show 227012 16 39 44 -49 21 02 HJ 4873 AC 2015 5 169 13.3 9.07 12.26 3.19
Show 16 39 47 -49 20 51 HJ 4873 BD 2015 6 35 8.5 9.55 12.10 2.55
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 149855 Constellation Ara SAO 227012 Tycho2 8333-00680-1
Gaia DR2 5940824297453501824 HD 149855 DM CP-49 9498