13081-7719 HDS 1839 (HD 113693)

13h 08m 02.87s -77° 18' 35.3" P.A. 201.00 sep 0.2 mag 9.03,11.30 Sp K3V dist. 42.84 pc (139.74 l.y.)

Coord 2000 13081-7719 Discov num HDS1839 Comp Coord arcsec 2000 13 08 02.87 -77 18 35.3
Date first 1991 Date last 2021 Obs 10
Pa first 163 Pa last 201.4 P.A. Now (θ) 190.1°
Sep first 0.2 Sep last 0.17 Sep. Now (ρ) 0.2"
Mag pri 9.03 Mag sec 11.30 delta mag (ΔM) 2.27 Spectral class K3V (yellow-orange)
Pri motion ra +047 Sec motion ra
Pri motion dec -068 Sec motion dec
Notes O (Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 113693 Constellation Chamaeleon HIP 64091 Tycho2 9417-00642-1
Gaia DR2 5788964286871098624 HD 113693 GL NN 3761 CP CP-76 747
Distance 42.84 Distance ly 139.74




ORBITAL ELEMENTS SOLUTION #1

Period (P)17.44y± 1.03 Periastron (T)2014.11y± 0.84 Semi-major axis (a)0.2007a± 0.0124
Eccentricity (e)0.168± 0.104 Inclination (i)120.5°± 2.5 Longitude of periastron (ω)320.5°± 19
Node (Ω)349.2°± 5.4 Notes ReferenceTok2016e
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 319.5 0.148
2001 296.6 0.123
2002 264.8 0.110
2003 233.2 0.124
2004 211.0 0.153
2005 196.4 0.185
2006 185.8 0.210
2007 177.1 0.224
2008 168.9 0.224
2009 160.0 0.207
2010 148.6 0.175
2011 130.6 0.131
2012 95.6 0.094
2013 46.0 0.098
2014 14.3 0.135
2015 356.2 0.166
2016 342.1 0.173
2017 327.3 0.159
2018 307.8 0.133
2019 279.6 0.113
2020 246.2 0.115
2021 219.6 0.139
2022 202.1 0.171
2023 190.1 0.200
2024 180.8 0.220
2025 172.5 0.226
2026 164.1 0.216
2027 154.1 0.191
2028 139.8 0.151
2029 113.9 0.107
2030 67.1 0.090


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



 
 


wds13081-7719a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 




ORBITAL ELEMENTS SOLUTION #2

Period (P)17.01y± 0.36 Periastron (T)2015.01y± 0.36 Semi-major axis (a)0.205a± 0.005
Eccentricity (e)0.16± 0.026 Inclination (i)119.5°± 1.2 Longitude of periastron (ω)163.6°± 7.6
Node (Ω)167.8°± 1.5 Notes ReferenceTok2019c
Equinox Last observation2018 Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 325.2 0.152
2001 301.5 0.120
2002 264.8 0.103
2003 227.7 0.120
2004 204.4 0.157
2005 190.3 0.194
2006 180.3 0.222
2007 172.1 0.235
2008 164.3 0.233
2009 155.7 0.214
2010 144.6 0.179
2011 126.8 0.135
2012 93.4 0.099
2013 46.5 0.101
2014 14.8 0.137
2015 356.2 0.167
2016 341.5 0.172
2017 325.4 0.152
2018 301.8 0.120
2019 265.2 0.103
2020 228.0 0.119
2021 204.6 0.156
2022 190.4 0.194
2023 180.4 0.221
2024 172.2 0.235
2025 164.4 0.233
2026 155.8 0.214
2027 144.7 0.180
2028 127.1 0.136
2029 93.9 0.099
2030 46.9 0.101


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



 
 


wds13081-7719b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic