18011-1804 A 2256 AB,E (HD 164261)

 
 
18h 01m 03.14s -18° 04' 24.3" P.A. 124.00 sep 21.9 mag 8.40,12.40 Sp B9V
 
 
Coord 2000 18011-1804 Discov num A  2256 Comp AB,E Coord arcsec 2000 18 01 03.14 -18 04 24.3
Date first 1926 Date last 2016 Obs 4
Pa first 124 Pa last 123.8 P.A. Now (θ) 123.8°
Sep first 22.4 Sep last 21.9 Sep. Now (ρ) 21.9"
Mag pri 8.40 Mag sec 12.40 delta mag (ΔM) 4 Spectral class B9V (blue-white)
Pri motion ra -004 Sec motion ra +005
Pri motion dec -002 Sec motion dec -021
Notes
rPM=0.974
This double is not physical.
 
 
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
 
 
Name HD 164261 Constellation Sagittarius SAO 160994 Tycho2 6255-01015-1
Gaia DR2 4143553966388921728 HD 164261