11383-6322 I   422AB (V871 Cen)

 
 
11H 38M 20.37S -63 22' 21.9" P.A. 120 SEP 0.33 MAG 7.10,7.42 SP O7N DIST. 2941.18 PC (9594.13 L.Y.)
 
 
Coord 2000
11383-6322
Discov num
I   422
Comp
AB
Coord arcsec 2000
11 38 20.37 -63 22 21.9
Date first
1902
Date last
2015
Obs
21
Pa first
94
Pa last
117
P.A. Now (θ)
120°
Sep first
0.5
Sep last
0.4
Sep. Now (ρ)
0.33"
Mag pri
7.10
Mag sec
7.42
delta mag (ΔM)
0.32
Spectral class
O7N (blue)
Pri motion ra
-006
Sec motion ra
Pri motion dec
+006
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
11383-6322 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show V871 Cen 251511 11383-6322 I 422 AB 1902 2015 21 120 0.3 7.10 7.42 0.32 Y <===
Show 251511 11383-6322 I 422 AB,C 1902 2015 9 7 1.7 6.54 9.91 3.37
Show 251511 11383-6322 I 422 AB,D 1902 2000 5 324 9.5 6.54 11.60 5.06
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
V871 Cen
Constellation
Centaurus
SAO
251511
HIP
56769
Tycho2
8976-05393-1
HD
101205
CP
CP-62 2168
Distance
2941.18
Distance ly
9594.13
last precise pa
117
last precise sep
0.367
 
 
ORBITAL ELEMENTS
 
 
Period (P)1715.8y± 285.4 Periastron (T)909.2y± 230.1 Semi-major axis (a)1.316a± 0.445
Eccentricity (e)0.73± 0.106 Inclination (i)81.9°± 13 Longitude of periastron (ω)73.8°± 14.8
Node (Ω)234.8°± 8.8 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.350 114.9
2001 0.349 115.2
2002 0.347 115.4
2003 0.346 115.7
2004 0.345 116.0
2005 0.344 116.3
2006 0.343 116.6
2007 0.342 116.9
2008 0.341 117.2
2009 0.340 117.5
2010 0.339 117.8
2011 0.338 118.1
2012 0.337 118.4
2013 0.336 118.7
2014 0.334 119.1
2015 0.333 119.4
2016 0.332 119.7
2017 0.331 120.0
2018 0.330 120.3
2019 0.329 120.6
2020 0.328 121.0
2021 0.328 121.3
2022 0.327 121.6
2023 0.326 122.0
2024 0.325 122.3
2025 0.324 122.6
2026 0.323 123.0
2027 0.322 123.3
2028 0.321 123.6
2029 0.320 124.0
2030 0.319 124.3

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