16542-4151 SNA  54BC

 
 
16H 54M 13.20S -41 50' 32.5" P.A. 142 SEP 1 MAG 7.40,12.23 SP O9IV
 
 
Coord 2000
16542-4151
Discov num
SNA  54
Comp
BC
Coord arcsec 2000
16 54 13.20 -41 50 32.5
Date first
2012
Date last
2012
Obs
1
Pa first
142
Pa last
142
P.A. Now (θ)
142°
Sep first
1.0
Sep last
1.0
Sep. Now (ρ)
1"
Mag pri
7.40
Mag sec
12.23
delta mag (ΔM)
4.83
Spectral class
O9IV (blue)
Pri motion ra
-001
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.
 
 
16542-4151 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227383 16542-4151 WFC 183 AB 1901 1999 8 36 30.5 6.39 7.74 1.35
Show 227385 16542-4151 SNA 54 Ba,Bb 2012 2012 1 348 0.0 7.50 10.80 3.30
Show 227385 16542-4151 SNA 54 BC 2012 2012 1 142 1.0 7.40 12.23 4.83 <===
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Scorpius
SAO
227385
Tycho2
7876-02816-1
last precise pa
142
last precise sep
1.01