16555-0820 WNO  55AB,F

 
 
16h 55m 28.75s -08 20' 11.3" P.A. 155 sep 230.6 mag 9.02,16.85 Sp M3Ve+M7V dist. 6.2 pc (20.22 l.y.)
 
 
Coord 2000
16555-0820
Discov num
WNO  55
Comp
AB,F
Coord arcsec 2000
16 55 28.75 -08 20 11.3
Date first
1954
Date last
2014
Obs
12
Pa first
155
Pa last
155
P.A. Now (θ)
155°
Sep first
232.5
Sep last
230.6
Sep. Now (ρ)
230.6"
Mag pri
9.02
Mag sec
16.85
delta mag (ΔM)
7.83
Spectral class
M3Ve+M7V (red/red)
Pri motion ra
-810
Sec motion ra
-771
Pri motion dec
-894
Sec motion dec
-871
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.038 (< 0.3, Physical double)
This double is physical.
 
 
16555-0820 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show V1054 Oph 16555-0820 KUI 75 AB 1934 2015 378 76 0.2 9.73 9.81 0.08 Y
Show 16555-0820 LDS 573 AB,C 1920 2014 20 313 72.2 9.44 11.76 2.32
Show 16555-0820 LDS 573 AB,D 1960 1960 1 155 21.0 9.02 17.70 8.68
Show 16555-0820 SLE 687 AB,E 1970 2007 7 324 295.3 9.02 10.40 1.38
Show 16555-0820 WNO 55 AB,F 1954 2014 12 155 230.6 9.02 16.85 7.83 <===
Show 16555-0820 UC 3253 CF 1999 2010 3 150 298.9 11.40 16.50 5.10
Sextuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
155.3
Precise sep
230.61
Var name
V1054 Oph
Constellation
Ophiuchus
HIP
82817
Tycho2
5642-01503-1
HD
152751
GL
Gl 644A
BD
BD-08 4352
Distance
6.2
Distance ly
20.22
last precise pa
155.3
last precise sep
230.61
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16555-0820 WNO 55 AB,F 1999 1 155 230.8 9.02 16.85 M3Ve NVD 165529.24-082003.1
16555-0820 WNO 55 AB,F 2000 2 155 231.4 9.02 16.85 M3Ve NVD 165529.24-082003.1
16555-0820 WNO 55 AB,F 2010 9 155 230.4 9.02 16.85 M3Ve+M7V NV 165529.24-082003.1
16555-0820 WNO 55 AB,F 2014 10 155 230.6 9.02 16.85 M3Ve+M7V NV 165529.24-082003.1

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