21223+2906 COU 532

 
 
21h 22m 19.57s +29° 06' 23.1" P.A. 45.00 sep 0.4 mag 9.50,9.50 Sp G0
 
 
Coord 2000 21223+2906 Discov num COU 532 Comp Coord arcsec 2000 21 22 19.57 +29 06 23.1
Date first 1970 Date last 2016 Obs 21
Pa first 78 Pa last 45 P.A. Now (θ) 45°
Sep first 0.1 Sep last 0.387 Sep. Now (ρ) 0.387"
Mag pri 9.50 Mag sec 9.50 delta mag (ΔM) 0 Spectral class G0 (yellow)
Pri motion ra +030 Sec motion ra
Pri motion dec +015 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2199-00128-1 Gaia DR2 1848618245631059456
 
 
ORBITAL ELEMENTS
 
 
Period (P)556.1y± 91 Periastron (T)1959.3y± 2.5 Semi-major axis (a)0.494a± 0.052
Eccentricity (e)0.5669± 0.033 Inclination (i)119.3°± 1.4 Longitude of periastron (ω)258.1°± 8.4
Node (Ω)45.4°± 1 Notes ReferenceBAE2021
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 53.5 0.311
2001 52.9 0.317
2002 52.3 0.322
2003 51.7 0.327
2004 51.1 0.331
2005 50.5 0.336
2006 50.0 0.341
2007 49.4 0.345
2008 48.9 0.350
2009 48.4 0.354
2010 47.9 0.359
2011 47.4 0.363
2012 46.9 0.367
2013 46.4 0.371
2014 46.0 0.375
2015 45.5 0.379
2016 45.1 0.382
2017 44.7 0.386
2018 44.2 0.390
2019 43.8 0.393
2020 43.4 0.396
2021 43.0 0.400
2022 42.6 0.403
2023 42.2 0.406
2024 41.8 0.409
2025 41.5 0.412
2026 41.1 0.415
2027 40.7 0.418
2028 40.4 0.421
2029 40.0 0.424
2030 39.7 0.427


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



 
 


wds21223%2B2906a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic