16555-0820 KUI  75AB (V1054 Oph)

 
 
16H 55M 28.75S -08 20' 11.3" P.A. 76 SEP 0.2 MAG 9.73,9.81 SP M3VE DIST. 6.2 PC (20.22 L.Y.)
 
 
Coord 2000
16555-0820
Discov num
KUI  75
Comp
AB
Coord arcsec 2000
16 55 28.75 -08 20 11.3
Date first
1934
Date last
2015
Obs
378
Pa first
135
Pa last
76
P.A. Now (θ)
76°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.73
Mag sec
9.81
delta mag (ΔM)
0.08
Spectral class
M3Ve (red)
Pri motion ra
-829
Sec motion ra
Pri motion dec
-879
Sec motion dec
Notes
N O (See Notes, Orbital solution)
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
 
 
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
76.1
last precise sep
0.211
 
 
ORBITAL ELEMENTS
 
 
Period (P)1.717y Periastron (T)1991.6y Semi-major axis (a)0.23a
Eccentricity (e)0.06 Inclination (i)161° Longitude of periastron (ω)104°
Node (Ω)147° Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.211 87.7
2001 0.231 230.8
2002 0.210 18.3
2003 0.236 176.4
2004 0.228 316.8
2005 0.224 121.4
2006 0.230 260.7
2007 0.205 55.5
2008 0.233 205.1
2009 0.220 348.3
2010 0.234 151.5
2011 0.230 290.6
2012 0.212 92.2
2013 0.230 234.5
2014 0.209 22.9
2015 0.236 180.0
2016 0.227 320.7
2017 0.225 125.3
2018 0.230 264.5
2019 0.205 60.2
2020 0.233 208.7
2021 0.218 352.4
2022 0.234 155.1
2023 0.230 294.3
2024 0.214 96.6
2025 0.230 238.3
2026 0.207 27.4
2027 0.236 183.6
2028 0.226 324.5
2029 0.227 129.2
2030 0.230 268.2

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic