18011-1804 A 2256 AB,D

 
 
18h 01m 03.14s -18° 04' 24.3" P.A. 128.00 sep 7.2 mag 8.40,13.00 Sp B9V
 
 
Coord 2000 18011-1804 Discov num A  2256 Comp AB,D Coord arcsec 2000 18 01 03.14 -18 04 24.3
Date first 1910 Date last 1998 Obs 4
Pa first 130 Pa last 128.3 P.A. Now (θ) 128.3°
Sep first 7.1 Sep last 7.21 Sep. Now (ρ) 7.21"
Mag pri 8.40 Mag sec 13.00 delta mag (ΔM) 4.6 Spectral class B9V (blue-white)
Pri motion ra -002 Sec motion ra
Pri motion dec -002 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18011-1804 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 160994 18 01 03 -18 04 24 A 2256 AB 2015 7 161 0.2 8.80 9.80 1.00
Show 160994 18 01 03 -18 04 24 A 2256 AB,C 1917 1 4 6.8 8.40 13.90 5.50
Show 160994 18 01 03 -18 04 24 A 2256 AB,D 1998 4 128 7.2 8.40 13.00 4.60 <===
Show HD 164261 160994 18 01 03 -18 04 24 A 2256 AB,E 2016 4 124 21.9 8.40 12.40 4.00
Quintuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 160994 Tycho2 6255-01015-1 Gaia DR2 4143553966388921728
HD 164261