18039-1913 B 2431 (HD 312561)

 
 
18h 03m 51.54s -19° 13' 07.1" P.A. 285.00 sep 9.7 mag 9.71,11.50 Sp M1
 
 
Coord 2000 18039-1913 Discov num B  2431 Comp Coord arcsec 2000 18 03 51.54 -19 13 07.1
Date first 1919 Date last 2015 Obs 9
Pa first 288 Pa last 284.9 P.A. Now (θ) 284.9°
Sep first 9.7 Sep last 9.711 Sep. Now (ρ) 9.711"
Mag pri 9.71 Mag sec 11.50 delta mag (ΔM) 1.79 Spectral class M1 (red)
Pri motion ra +002 Sec motion ra -010
Pri motion dec -004 Sec motion dec -007
Notes
rPM=1.013
This double is not physical.
 
 
18039-1913 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 161033 18 03 52 -19 13 07 OCC 537 Aa,Ab 1998 1 104 0.9 9.80 9.80 0.00
Show HD 312561 161033 18 03 52 -19 13 07 B 2431 2015 9 285 9.7 9.71 11.50 1.79 <===
Quadruple system
0 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 312561 Constellation Sagittarius SAO 161033 Tycho2 6259-01445-1
Gaia DR2 4095295988730354176 HD 312561