20286-0426 TOK 700 (HD 194976)

 
 
20h 28m 37.11s -04 25' 40.2" P.A. 235.00 sep 0.1 mag 8.20,9.00 Sp F8 dist. 65.45 pc (213.5 l.y.)
 
 
Coord 2000 20286-0426 Discov num TOK 700 Comp Coord arcsec 2000 20 28 37.11 -04 25 40.2
Date first 2015 Date last 2021 Obs 9
Pa first 222 Pa last 235.1 P.A. Now (θ) 221.1°
Sep first 0.1 Sep last 0.119 Sep. Now (ρ) 0.104"
Mag pri 8.20 Mag sec 9.00 delta mag (ΔM) 0.8 Spectral class F8 (yellow-white)
Pri motion ra -011 Sec motion ra
Pri motion dec +029 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194976 Constellation Aquila SAO 144474 HIP 100998
Tycho2 5171-01579-1 Gaia DR2 4218592851809850880 HD 194976 GC 28479
BD BD-04 5147 Distance 65.45 Distance ly 213.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.327y± 0.233 Periastron (T)2017.954y± 0.038 Semi-major axis (a)0.069a± 0.003
Eccentricity (e)0.817± 0.015 Inclination (i)152.4°± 6.6 Longitude of periastron (ω)47°± 12.2
Node (Ω)97.7°± 11.7 Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 231.0 0.116
2001 221.3 0.104
2002 206.9 0.078
2003 161.0 0.031
2004 272.4 0.060
2005 253.0 0.097
2006 242.6 0.114
2007 233.8 0.118
2008 224.7 0.109
2009 212.6 0.088
2010 186.6 0.049
2011 288.9 0.039
2012 257.6 0.088
2013 245.6 0.110
2014 236.6 0.118
2015 227.9 0.113
2016 217.2 0.097
2017 198.7 0.065
2018 15.0 0.012
2019 263.4 0.076
2020 249.0 0.105
2021 239.5 0.117
2022 230.8 0.116
2023 221.1 0.104
2024 206.5 0.077
2025 158.5 0.029
2026 271.8 0.061
2027 252.8 0.098
2028 242.4 0.115
2029 233.7 0.118
2030 224.5 0.109


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



 
 


wds20286-0426a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic