13106-3128 RST1706

 
 
13h 10m 36.33s -31 28' 14.4" P.A. 95.6 sep 0.31 mag 9.40,11.34 Sp K0V dist. 51.89 pc (169.27 l.y.)
 
 
Coord 2000
13106-3128
Discov num
RST1706
Comp
Coord arcsec 2000
13 10 36.33 -31 28 14.4
Date first
1934
Date last
2017
Obs
13
Pa first
252
Pa last
96
P.A. Now (θ)
95.6°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.31"
Mag pri
9.40
Mag sec
11.34
delta mag (ΔM)
1.94
Spectral class
K0V (yellow-orange)
Pri motion ra
-090
Sec motion ra
Pri motion dec
-025
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
95.8
Precise sep
0.306
Constellation
Centaurus
SAO
204192
HIP
64292
Tycho2
7250-01349-1
HD
114385
CD
CD-3010384
CP
CP-30 3610
Distance
51.89
Distance ly
169.27
last precise pa
95.8
last precise sep
0.306
 
 
ORBITAL ELEMENTS
 
 
Period (P)91y Periastron (T)1999.66y± 0.39 Semi-major axis (a)0.463a± 0.014
Eccentricity (e)0.532± 0.0035 Inclination (i)111.9°± 1 Longitude of periastron (ω)168.6°± 2.6
Node (Ω)63.4°± 1.7 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.216 245.7
2001 0.219 240.1
2002 0.215 234.4
2003 0.205 228.4
2004 0.191 221.5
2005 0.174 213.5
2006 0.158 203.8
2007 0.145 192.0
2008 0.137 178.4
2009 0.135 163.7
2010 0.141 149.5
2011 0.153 137.0
2012 0.170 126.7
2013 0.191 118.4
2014 0.213 111.8
2015 0.237 106.5
2016 0.262 102.2
2017 0.286 98.6
2018 0.310 95.6
2019 0.334 93.0
2020 0.358 90.8
2021 0.381 88.8
2022 0.403 87.1
2023 0.425 85.5
2024 0.446 84.1
2025 0.466 82.8
2026 0.485 81.6
2027 0.504 80.5
2028 0.522 79.5
2029 0.539 78.6
2030 0.555 77.7

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

grafico orbita





wds13106-3128a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
13106-3128 RST1706 1991 5 187 0.1 9.40 11.34 K0V 131036.33-312814.4
13106-3128 RST1706 2009 6 161 0.1 9.40 11.34 K0V 131036.33-312814.4
13106-3128 RST1706 2011 7 137 0.2 9.40 11.34 K0V 131036.33-312814.4
13106-3128 RST1706 2012 9 124 0.2 9.40 11.34 K0V O 131036.33-312814.4
13106-3128 RST1706 2013 11 116 0.2 9.40 11.34 K0V O 131036.33-312814.4
13106-3128 RST1706 2014 12 109 0.2 9.40 11.34 K0V NO 131036.33-312814.4
13106-3128 RST1706 2017 13 96 0.3 9.40 11.34 K0V NO 131036.33-312814.4

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