13306-4238 HDS1891

 
 
13h 30m 36.43s -42 37' 50.5" P.A. 6.90 sep 0.2 mag 10.01,11.09 Sp K4V dist. 32.66 pc (106.54 l.y.)
 
 
Coord 2000
13306-4238
Discov num
HDS1891
Comp
Coord arcsec 2000
13 30 36.43 -42 37 50.5
Date first
1991
Date last
2020
Obs
10
Pa first
126
Pa last
31
P.A. Now (θ)
6.9°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.21"
Mag pri
10.01
Mag sec
11.09
delta mag (ΔM)
1.08
Spectral class
K4V (yellow-orange)
Pri motion ra
-132
Sec motion ra
Pri motion dec
-115
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
30.5
Precise sep
0.209
Constellation
Centaurus
HIP
65906
Tycho2
7796-00866-1
Gaia DR2
73787597568
HD
117383
CD
CD-41 7889
CP
CP-41 6366
Distance
32.66
Distance ly
106.54
last precise pa
30.5
last precise sep
0.209
 
 
ORBITAL ELEMENTS
 
 
Period (P)12.51y± 0.05 Periastron (T)2014.76y± 1.38 Semi-major axis (a)0.185a± 0.027
Eccentricity (e)0.192± 0.046 Inclination (i)162.6°± 27.1 Longitude of periastron (ω)273.2°± 157.7
Node (Ω)99.9°± 103.7 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.176 273.4
2001 0.156 239.8
2002 0.143 197.9
2003 0.149 153.5
2004 0.167 116.0
2005 0.185 86.1
2006 0.198 61.0
2007 0.206 38.4
2008 0.210 17.1
2009 0.210 356.2
2010 0.207 335.1
2011 0.199 312.8
2012 0.185 287.8
2013 0.166 257.9
2014 0.148 220.2
2015 0.143 175.7
2016 0.157 134.1
2017 0.176 100.6
2018 0.192 73.4
2019 0.202 49.7
2020 0.208 27.8
2021 0.210 6.9
2022 0.209 346.0
2023 0.204 324.4
2024 0.193 301.0
2025 0.176 274.0
2026 0.156 240.5
2027 0.143 198.8
2028 0.148 154.4
2029 0.166 116.7
2030 0.184 86.7

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






wds13306-4238a.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
13306-4238 HDS1891 1991 1 126 0.2 10.01 11.09 K4V 133036.43-423750.5
13306-4238 HDS1891 2014 2 212 0.1 10.01 11.09 K4V 133036.43-423750.5
13306-4238 HDS1891 2015 3 168 0.1 10.01 11.09 K4V 133036.43-423750.5
13306-4238 HDS1891 2017 6 93 0.2 10.01 11.09 K4V O 133036.43-423750.5
13306-4238 HDS1891 2018 7 71 0.2 10.01 11.09 K4V O 133036.43-423750.5
13306-4238 HDS1891 2019 9 41 0.2 10.01 11.09 K4V O 133036.43-423750.5

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