18170-1858 SNA  85Aa,Ab

 
 
18H 16M 58.56S -18 58' 05.1" P.A. 265 MAG 6.80,9.30 SP O7II-III
 
 
Coord 2000
18170-1858
Discov num
SNA  85
Comp
Aa,Ab
Coord arcsec 2000
18 16 58.56 -18 58 05.1
Date first
2012
Date last
2012
Obs
2
Pa first
266
Pa last
265
P.A. Now (θ)
265°
Sep first
0.1
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
6.80
Mag sec
9.30
delta mag (ΔM)
2.5
Spectral class
O7II-III (blue)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
This double is physical.
 
 
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
265.2
last precise sep
0.047