20269-3724 R 321 (HD 194433)

 
 
20h 26m 52.97s -37 24' 10.6" P.A. 123.00 sep 1.6 mag 6.58,8.09 Sp K2IV+K1V dist. 37.33 pc (121.77 l.y.)
 
 
Coord 2000 20269-3724 Discov num R   321 Comp Coord arcsec 2000 20 26 52.97 -37 24 10.6
Date first 1880 Date last 2019 Obs 71
Pa first 97 Pa last 123 P.A. Now (θ) 121.8°
Sep first 1.1 Sep last 1.58 Sep. Now (ρ) 1.599"
Mag pri 6.58 Mag sec 8.09 delta mag (ΔM) 1.51 Spectral class K2IV+K1V (yellow-orange/yellow-orange)
Pri motion ra -249 Sec motion ra -249
Pri motion dec -114 Sec motion dec -114
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194433 Constellation Sagittarius SAO 212126 HIP 100852
Tycho2 7467-01373-1 Gaia DR2 6694723755167180160 HD 194433 HR 7808
GC 28425 CD CD-3713741 Distance 37.33 Distance ly 121.77
 
 
ORBITAL ELEMENTS
 
 
Period (P)186.4192y± 5.9398 Periastron (T)1949.1982y± 0.1812 Semi-major axis (a)1.06149a± 0.01098
Eccentricity (e)0.69564± 0.00946 Inclination (i)139.301°± 1.541 Longitude of periastron (ω)227.418°± 2.218
Node (Ω)152.349°± 1.626 Notes ReferenceIzm2019
Equinox Last observation2013 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 133.2 1.469
2001 132.7 1.479
2002 132.1 1.488
2003 131.6 1.497
2004 131.1 1.506
2005 130.5 1.514
2006 130.0 1.522
2007 129.5 1.529
2008 129.0 1.536
2009 128.5 1.543
2010 128.0 1.549
2011 127.5 1.555
2012 127.0 1.560
2013 126.6 1.565
2014 126.1 1.570
2015 125.6 1.575
2016 125.1 1.579
2017 124.6 1.583
2018 124.2 1.586
2019 123.7 1.589
2020 123.2 1.592
2021 122.8 1.595
2022 122.3 1.597
2023 121.8 1.599
2024 121.4 1.600
2025 120.9 1.602
2026 120.5 1.603
2027 120.0 1.603
2028 119.5 1.604
2029 119.1 1.604
2030 118.6 1.604


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



 
 


wds20269-3724b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic