20104-1923 HDS 2873 (HD 191434)

 
 
20h 10m 25.46s -19 22' 59.4" P.A. 226.00 sep 0.1 mag 7.49,10.22 Sp G0V dist. 61.09 pc (199.28 l.y.)
 
 
Coord 2000 20104-1923 Discov num HDS2873 Comp Coord arcsec 2000 20 10 25.46 -19 22 59.4
Date first 1991 Date last 2020 Obs 11
Pa first 204 Pa last 225.6 P.A. Now (θ) 225.6°
Sep first 0.2 Sep last 0.136 Sep. Now (ρ) 0.136"
Mag pri 7.49 Mag sec 10.22 delta mag (ΔM) 2.73 Spectral class G0V (yellow)
Pri motion ra -004 Sec motion ra
Pri motion dec -127 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 191434 Constellation Capricornus SAO 163313 HIP 99391
Tycho2 6323-02047-1 Gaia DR2 6866542478736575616 HD 191434 GC 27978
BD BD-19 5731 Distance 61.09 Distance ly 199.28
 
 
ORBITAL ELEMENTS
 
 
Period (P)90y Periastron (T)2007.46y± 0.67 Semi-major axis (a)0.3843a± 0.0087
Eccentricity (e)0.484± 0.006 Inclination (i)94°± 0.4 Longitude of periastron (ω)-0.3°± 4.3
Node (Ω)35.2°± 0.9 Notes ReferenceTok2016e
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 54.8 0.055
2001 46.9 0.083
2002 43.0 0.111
2003 40.6 0.136
2004 38.9 0.159
2005 37.7 0.177
2006 36.6 0.191
2007 35.6 0.197
2008 34.7 0.197
2009 33.8 0.191
2010 32.7 0.177
2011 31.4 0.159
2012 29.8 0.136
2013 27.4 0.111
2014 23.5 0.083
2015 15.6 0.055
2016 352.7 0.029
2017 282.0 0.023
2018 244.1 0.045
2019 233.1 0.073
2020 228.2 0.102
2021 225.5 0.130
2022 223.7 0.158
2023 222.5 0.185
2024 221.6 0.211
2025 220.9 0.237
2026 220.3 0.261
2027 219.8 0.284
2028 219.4 0.307
2029 219.0 0.328
2030 218.7 0.349


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



 
 


wds20104-1923a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic