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
 
 
Precise pa
324
Precise sep
3.41
Constellation
Scorpius
SAO
227393
Tycho2
7876-02319-1
HD
326331
last precise pa
324
last precise sep
3.41
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16544-4150 SNA 55 AD 2011 1 324 3.4 6.93 12.63 O8IV V K 165425.95-414955.8

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