18011-1804 A  2256AB

 
 
18H 01M 03.14S -18 04' 24.3" P.A. 161 SEP 0.2 MAG 8.80,9.80 SP B9V
 
 
Coord 2000
18011-1804
Discov num
A  2256
Comp
AB
Coord arcsec 2000
18 01 03.14 -18 04 24.3
Date first
1910
Date last
2015
Obs
7
Pa first
148
Pa last
161
P.A. Now (θ)
161°
Sep first
0.4
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.80
Mag sec
9.80
delta mag (ΔM)
1
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 160994 18011-1804 A 2256 AB 1910 2015 7 161 0.2 8.80 9.80 1.00 <===
Show 160994 18011-1804 A 2256 AB,C 1917 1917 1 4 6.8 8.40 13.90 5.50
Show 160994 18011-1804 A 2256 AB,D 1910 1998 4 128 7.2 8.40 13.00 4.60
Show 160994 18011-1804 A 2256 AB,E 1926 2016 4 124 21.9 8.40 12.40 4.00
Quintuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
SAO
160994
Tycho2
6255-01015-1
HD
164261
last precise pa
160.7
last precise sep
0.248