14020-2108 WSI 79 (HD 122391)

 
 
14h 01m 59.80s -21° 08' 00.3" P.A. 12.00 sep 0.3 mag 9.30,12.10 Sp K0/1V dist. 50.13 pc (163.52 l.y.)
 
 
Coord 2000 14020-2108 Discov num WSI  79 Comp Coord arcsec 2000 14 01 59.80 -21 08 00.3
Date first 2001 Date last 2021 Obs 15
Pa first 352 Pa last 11.6 P.A. Now (θ) 11.6°
Sep first 0.3 Sep last 0.259 Sep. Now (ρ) 0.259"
Mag pri 9.30 Mag sec 12.10 delta mag (ΔM) 2.8 Spectral class K0/1V (yellow-orange)
Pri motion ra -203 Sec motion ra
Pri motion dec -143 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 122391 Constellation Virgo SAO 182179 HIP 68552
Tycho2 6149-00570-1 Gaia DR2 6289569349715912704 HD 122391 BD BD-20 3940
Distance 50.13 Distance ly 163.52
 
 
ORBITAL ELEMENTS
 
 
Period (P)24.46y Periastron (T)2015.22y Semi-major axis (a)0.205a
Eccentricity (e)0.74 Inclination (i)144.7° Longitude of periastron (ω)325.1°
Node (Ω)137.9° Notes ReferenceTok2018b
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 357.1 0.312
2001 353.7 0.323
2002 350.6 0.332
2003 347.5 0.337
2004 344.5 0.338
2005 341.6 0.337
2006 338.5 0.331
2007 335.4 0.322
2008 332.0 0.309
2009 328.2 0.292
2010 323.9 0.269
2011 318.7 0.240
2012 311.8 0.204
2013 301.3 0.158
2014 280.3 0.100
2015 199.0 0.048
2016 96.9 0.076
2017 57.6 0.114
2018 38.3 0.153
2019 26.5 0.188
2020 18.3 0.219
2021 12.0 0.246
2022 6.9 0.270
2023 2.6 0.289
2024 358.7 0.306
2025 355.2 0.319
2026 352.0 0.328
2027 348.9 0.335
2028 345.9 0.338
2029 342.9 0.338
2030 339.9 0.334


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



 
 


wds14020-2108c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic