16569-4031 CHR 254Aa,Ab

 
 
16h 56m 54.67s -40 30' 44.4" P.A. 310 sep 0.1 mag 7.50,9.30 Sp O6.5IIIf: dist. 395.26 pc (1289.34 l.y.)
 
 
Coord 2000
16569-4031
Discov num
CHR 254
Comp
Aa,Ab
Coord arcsec 2000
16 56 54.67 -40 30 44.4
Date first
1996
Date last
2014
Obs
5
Pa first
122
Pa last
310
P.A. Now (θ)
310°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.50
Mag sec
9.30
delta mag (ΔM)
1.8
Spectral class
O6.5IIIf: (blue)
Pri motion ra
+010
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
16569-4031 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227479 16569-4031 CHR 254 Aa,Ab 1996 2014 5 310 0.1 7.50 9.30 1.80 <===
Show 227479 16569-4031 RST5421 AB 1945 1999 3 129 7.3 7.27 13.00 5.73
Show 227479 16569-4031 COO 289 AC 1897 2016 10 253 7.9 7.27 9.48 2.21
Show 227479 16569-4031 COO 289 AD 1897 2016 9 237 15.2 7.27 9.61 2.34
Show 227479 16569-4031 COO 289 AE 2016 2016 1 339 38.2 7.27 12.70 5.43
Show 227479 16569-4031 COO 289 CD 1897 1999 7 221 7.9 9.48 9.61 0.13
Sextuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
310.2
Precise sep
0.112
Constellation
Scorpius
SAO
227479
HIP
82936
Tycho2
7872-02169-1
HD
152723
CD
CD-4010986
CP
CP-40 7650
Distance
395.26
Distance ly
1289.34
last precise pa
310.2
last precise sep
0.112
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16569-4031 CHR 254 Aa,Ab 2006 2 126 0.1 7.27   O6.5IIIf: N 165654.67-403044.4
16569-4031 CHR 254 Aa,Ab 2011 4 308 0.1 7.27   O6.5IIIf: N 165654.67-403044.4
16569-4031 CHR 254 Aa,Ab 2012 4 311 0.1 7.27   O6.5IIIf: N 165654.67-403044.4
16569-4031 CHR 254 Aa,Ab 2014 5 310 0.1 7.50 9.30 O6.5IIIf: N 165654.67-403044.4

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