16563-4040 HDS2394AB

 
 
16h 56m 15.03s -40 39' 35.8" P.A. 308 sep 0.3 mag 7.02,8.29 Sp O7V dist. 1388.89 pc (4530.56 l.y.)
 
 
Coord 2000
16563-4040
Discov num
HDS2394
Comp
AB
Coord arcsec 2000
16 56 15.03 -40 39 35.8
Date first
1991
Date last
2015
Obs
9
Pa first
315
Pa last
308
P.A. Now (θ)
308°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
7.02
Mag sec
8.29
delta mag (ΔM)
1.27
Spectral class
O7V (blue)
Pri motion ra
+002
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
16563-4040 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227464 16563-4040 SNA 60 Aa,Ab 2012 2012 1 285 0.0 6.80 7.60 0.80
Show 227464 16563-4040 HDS2394 AB 1991 2015 9 308 0.3 7.02 8.29 1.27 <===
Show 227464 16563-4040 SNA 60 AC 2011 2015 4 144 1.5 6.34 9.89 3.55
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
308.2
Precise sep
0.255
Constellation
Scorpius
SAO
227464
HIP
82876
Tycho2
7872-00879-1
HD
152623
CD
CD-4010961
CP
CP-40 7630
Distance
1388.89
Distance ly
4530.56
last precise pa
308.2
last precise sep
0.255
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16563-4040 HDS2394 AB 2011 6 308 0.3 7.02 8.29 O7 N 165615.03-403935.8
16563-4040 HDS2394 AB 2014 7 308 0.3 7.02 8.29 O7 N 165615.03-403935.8
16563-4040 HDS2394 AB 2015 9 308 0.3 7.02 8.29 O7 N 165615.03-403935.8

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