03221+4440 COU 1681

 
 
03h 22m 05.17s +44° 39' 42.0" P.A. 251.00 sep 0.1 mag 10.04,10.78 Sp G5 dist. 157.23 pc (512.88 l.y.)
 
 
Coord 2000 03221+4440 Discov num COU1681 Comp Coord arcsec 2000 03 22 05.17 +44 39 42.0
Date first 1978 Date last 2011 Obs 21
Pa first 58 Pa last 250.5 P.A. Now (θ) 161.1°
Sep first 0.3 Sep last 0.103 Sep. Now (ρ) 0.198"
Mag pri 10.04 Mag sec 10.78 delta mag (ΔM) 0.74 Spectral class G5 (yellow)
Pri motion ra +076 Sec motion ra
Pri motion dec -044 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Perseus HIP 15688 Tycho2 2873-02677-1 Gaia DR2 242222106663050240
BD BD+44 679 Distance 157.23 Distance ly 512.88
 
 
ORBITAL ELEMENTS
 
 
Period (P)68.3y± 2.4 Periastron (T)2011.9y± 0.3 Semi-major axis (a)0.23a± 0.005
Eccentricity (e)0.395± 0.005 Inclination (i)135.3°± 0.6 Longitude of periastron (ω)109.5°± 4.9
Node (Ω)6.8°± 1.6 Notes ReferenceBAE2021
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 6.3 0.223
2001 2.5 0.213
2002 358.3 0.203
2003 353.6 0.191
2004 348.3 0.178
2005 342.0 0.164
2006 334.6 0.150
2007 325.6 0.135
2008 314.4 0.121
2009 300.6 0.109
2010 284.1 0.102
2011 266.1 0.100
2012 248.7 0.105
2013 233.3 0.114
2014 220.6 0.126
2015 210.2 0.138
2016 201.4 0.150
2017 193.9 0.161
2018 187.3 0.171
2019 181.4 0.179
2020 175.9 0.185
2021 170.7 0.191
2022 165.8 0.195
2023 161.1 0.198
2024 156.5 0.201
2025 152.1 0.203
2026 147.7 0.204
2027 143.3 0.205
2028 139.0 0.206
2029 134.8 0.207
2030 130.6 0.208


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



 
 


wds03221%2B4440a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic