18170-1858 MZA  23AB

 
 
18H 16M 58.56S -18 58' 05.1" P.A. 227 SEP 17.5 MAG 7.40,13.50 SP B8IB
 
 
Coord 2000
18170-1858
Discov num
MZA  23
Comp
AB
Coord arcsec 2000
18 16 58.56 -18 58 05.1
Date first
1999
Date last
2009
Obs
4
Pa first
228
Pa last
227
P.A. Now (θ)
227°
Sep first
17.3
Sep last
17.5
Sep. Now (ρ)
17.5"
Mag pri
7.40
Mag sec
13.50
delta mag (ΔM)
6.1
Spectral class
B8Ib (blue-white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18170-1858 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 161255 18170-1858 SNA 85 Aa,Ab 2012 2012 2 265 0.0 6.80 9.30 2.50
Show 161255 18170-1858 MZA 23 AB 1999 2009 4 227 17.5 7.40 13.50 6.10 <===
Show 161255 18170-1858 SNA 85 AC 2012 2012 1 88 5.1 6.67 12.57 5.90
Show 161255 18170-1858 SNA 85 AD 2012 2012 1 247 5.8 6.67 13.63 6.96
Show 161255 18170-1858 SNA 85 AE 2012 2012 1 58 7.3 6.67 14.01 7.34
Sextuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
SAO
161255
Tycho2
6273-00422-1
HD
167659
last precise pa
226.7
last precise sep
17.531