16544-4150 SNA  55AD

 
 
16H 54M 25.95S -41 49' 55.8" P.A. 324 SEP 3.4 MAG 6.93,12.63 SP O8IV
 
 
Coord 2000
16544-4150
Discov num
SNA  55
Comp
AD
Coord arcsec 2000
16 54 25.95 -41 49 55.8
Date first
2011
Date last
2011
Obs
1
Pa first
324
Pa last
324
P.A. Now (θ)
324°
Sep first
3.4
Sep last
3.4
Sep. Now (ρ)
3.4"
Mag pri
6.93
Mag sec
12.63
delta mag (ΔM)
5.7
Spectral class
O8IV (blue)
Pri motion ra
-015
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
This double is physical.
 
 
16544-4150 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227393 16544-4150 HJ 4893 AB 1897 2016 9 53 7.0 7.44 9.60 2.16
Show 227393 16544-4150 SNA 55 AC 2011 2011 1 40 1.1 6.93 12.92 5.99
Show 227393 16544-4150 SNA 55 AD 2011 2011 1 324 3.4 6.93 12.63 5.70 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Scorpius
SAO
227393
Tycho2
7876-02319-1
HD
326331
last precise pa
324
last precise sep
3.41