03213+1038 HEI 449 (HD 20779)

 
 
03h 21m 18.10s +10° 37' 47.4" P.A. 53.00 sep 0.3 mag 9.19,9.43 Sp F8 dist. 94.34 pc (307.74 l.y.)
 
 
Coord 2000 03213+1038 Discov num HEI 449 Comp Coord arcsec 2000 03 21 18.10 +10 37 47.4
Date first 1987 Date last 2020 Obs 20
Pa first 61 Pa last 52.7 P.A. Now (θ) 50.6°
Sep first 0.3 Sep last 0.288 Sep. Now (ρ) 0.27"
Mag pri 9.19 Mag sec 9.43 delta mag (ΔM) 0.24 Spectral class F8 (yellow-white)
Pri motion ra -037 Sec motion ra
Pri motion dec -030 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 20779 Constellation Aries SAO 93402 HIP 15633
Tycho2 0652-00265-1 HD 20779 BD BD+10 432 Distance 94.34
Distance ly 307.74
 
 
ORBITAL ELEMENTS
 
 
Period (P)32.41y± 0.64 Periastron (T)2001.35y± 0.13 Semi-major axis (a)0.165a± 0.001
Eccentricity (e)0.806± 0.012 Inclination (i)114.6°± 1.9 Longitude of periastron (ω)180.4°± 3.8
Node (Ω)55.6°± 1.3 Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 7.3 0.042
2001 264.4 0.027
2002 166.6 0.022
2003 93.3 0.056
2004 79.5 0.096
2005 73.6 0.130
2006 70.0 0.160
2007 67.5 0.186
2008 65.6 0.208
2009 64.0 0.227
2010 62.7 0.244
2011 61.5 0.258
2012 60.4 0.269
2013 59.4 0.279
2014 58.5 0.286
2015 57.6 0.292
2016 56.7 0.296
2017 55.9 0.298
2018 55.1 0.298
2019 54.2 0.296
2020 53.4 0.292
2021 52.5 0.287
2022 51.5 0.279
2023 50.6 0.270
2024 49.5 0.258
2025 48.3 0.244
2026 47.0 0.228
2027 45.4 0.209
2028 43.5 0.187
2029 41.1 0.162
2030 37.6 0.133


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



 
 


wds03213%2B1038b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic