13190-2536 HDS 1866 (HD 115683)

 
 
13h 18m 58.38s -25° 35' 44.0" P.A. 330.00 sep 0.2 mag 8.52,9.90 Sp F8V dist. 94.79 pc (309.2 l.y.)
 
 
Coord 2000 13190-2536 Discov num HDS1866 Comp Coord arcsec 2000 13 18 58.38 -25 35 44.0
Date first 1991 Date last 2021 Obs 7
Pa first 21 Pa last 329.7 P.A. Now (θ) 312.1°
Sep first 0.2 Sep last 0.161 Sep. Now (ρ) 0.145"
Mag pri 8.52 Mag sec 9.90 delta mag (ΔM) 1.38 Spectral class F8V (yellow-white)
Pri motion ra -054 Sec motion ra
Pri motion dec -036 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 115683 Constellation Hydra SAO 181546 HIP 64970
Tycho2 6704-01445-1 Gaia DR2 6192886440428595456 HD 115683 CD CD-2410838
CP CP-24 5038 Distance 94.79 Distance ly 309.2
 
 
ORBITAL ELEMENTS
 
 
Period (P)22.72y± 0.37 Periastron (T)2008.29y± 0.16 Semi-major axis (a)0.1435a± 0.0032
Eccentricity (e)0.397± 0.024 Inclination (i)137.8°± 2.6 Longitude of periastron (ω)225.8°± 5.4
Node (Ω)18.3°± 5 Notes ReferenceTok2020e
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 315.1 0.148
2001 304.1 0.137
2002 291.3 0.127
2003 276.6 0.119
2004 260.0 0.113
2005 241.8 0.108
2006 222.2 0.104
2007 200.1 0.096
2008 171.5 0.081
2009 130.0 0.068
2010 85.9 0.078
2011 57.7 0.102
2012 40.7 0.127
2013 29.0 0.149
2014 20.0 0.164
2015 12.3 0.175
2016 5.4 0.182
2017 358.8 0.184
2018 352.3 0.183
2019 345.6 0.180
2020 338.4 0.173
2021 330.7 0.165
2022 322.0 0.155
2023 312.1 0.145
2024 300.7 0.134
2025 287.4 0.125
2026 272.1 0.117
2027 255.0 0.111
2028 236.5 0.107
2029 216.3 0.102
2030 193.0 0.092


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



 
 


wds13190-2536a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic