13123-5955 SEE 170AB (V831 Cen)

 
 
13H 12M 17.63S -59 55' 13.9" P.A. 148.1 SEP 0.11 MAG 5.30,6.00 SP B8V DIST. 116.14 PC (378.85 L.Y.)
 
 
Coord 2000
13123-5955
Discov num
SEE 170
Comp
AB
Coord arcsec 2000
13 12 17.63 -59 55 13.9
Date first
1897
Date last
2015
Obs
43
Pa first
96
Pa last
125
P.A. Now (θ)
148.1°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.11"
Mag pri
5.30
Mag sec
6.00
delta mag (ΔM)
0.7
Spectral class
B8V (blue-white)
Pri motion ra
-025
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
13123-5955 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show V831 Cen 240645 13123-5955 SEE 170 AB 1897 2015 43 148 0.1 5.30 6.00 0.70 Y <===
Show 240645 13123-5955 I 424 AB,C 1902 2015 29 15 1.9 4.55 8.40 3.85
Show 240645 13123-5955 HDO 223 AB,D 1891 2012 6 258 46.2 4.55 11.98 7.43
Show 240645 13123-5955 I 424 AB,E 1902 2000 3 24 53.1 4.55 14.90 10.35
Quintuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
V831 Cen
Constellation
Centaurus
SAO
240645
HIP
64425
Tycho2
8661-02284-1
HD
114529
HR
4975
CP
CP-59 4815
Distance
116.14
Distance ly
378.85
last precise pa
124.8
last precise sep
0.169
 
 
ORBITAL ELEMENTS
 
 
Period (P)27.432y Periastron (T)2021.872y Semi-major axis (a)0.167a
Eccentricity (e)0.687 Inclination (i)57.7° Longitude of periastron (ω)199.3°
Node (Ω)98.2° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 0.202 90.4
2001 0.223 93.6
2002 0.240 96.3
2003 0.253 98.6
2004 0.263 100.7
2005 0.269 102.7
2006 0.272 104.7
2007 0.273 106.6
2008 0.271 108.5
2009 0.266 110.5
2010 0.259 112.5
2011 0.249 114.7
2012 0.237 117.1
2013 0.221 119.8
2014 0.204 123.0
2015 0.183 126.8
2016 0.160 131.6
2017 0.134 138.2
2018 0.107 148.1
2019 0.079 165.1
2020 0.057 197.7
2021 0.054 246.4
2022 0.047 296.5
2023 0.044 26.5
2024 0.087 64.9
2025 0.128 77.5
2026 0.163 84.3
2027 0.191 88.9
2028 0.214 92.3
2029 0.233 95.2
2030 0.248 97.6

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