20248-1943 HDS 2919 (HD 194169)

 
 
20h 24m 46.66s -19 42' 35.9" P.A. 277.00 sep 0.1 mag 9.93,10.72 Sp K3V dist. 54.53 pc (177.88 l.y.)
 
 
Coord 2000 20248-1943 Discov num HDS2919 Comp Coord arcsec 2000 20 24 46.66 -19 42 35.9
Date first 1991 Date last 2021 Obs 14
Pa first 66 Pa last 276.9 P.A. Now (θ) 320.3°
Sep first 0.4 Sep last 0.091 Sep. Now (ρ) 0.085"
Mag pri 9.93 Mag sec 10.72 delta mag (ΔM) 0.79 Spectral class K3V (yellow-orange)
Pri motion ra +043 Sec motion ra
Pri motion dec -011 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194169 Constellation Capricornus SAO 163540 HIP 100685
Tycho2 6337-01640-1 Gaia DR2 6860285329861972096 HD 194169 BD BD-20 5925
Distance 54.53 Distance ly 177.88
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.88y± 1.47 Periastron (T)2020.99y± 0.08 Semi-major axis (a)0.265a± 0.003
Eccentricity (e)0.625± 0.009 Inclination (i)53.6°± 1.5 Longitude of periastron (ω)183.5°± 4.4
Node (Ω)74.2°± 1.6 Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 78.3 0.427
2001 79.8 0.423
2002 81.3 0.418
2003 82.8 0.410
2004 84.4 0.401
2005 86.0 0.390
2006 87.8 0.377
2007 89.7 0.363
2008 91.8 0.346
2009 94.1 0.328
2010 96.7 0.307
2011 99.6 0.285
2012 103.2 0.261
2013 107.4 0.234
2014 112.8 0.206
2015 119.9 0.177
2016 130.0 0.147
2017 145.0 0.119
2018 167.9 0.097
2019 198.7 0.090
2020 229.6 0.096
2021 256.5 0.099
2022 285.2 0.090
2023 320.3 0.085
2024 352.8 0.098
2025 14.2 0.126
2026 27.4 0.157
2027 36.2 0.190
2028 42.4 0.220
2029 47.1 0.249
2030 50.9 0.275


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



 
 


wds20248-1943b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic