09307-4028 COP 1 (Psi Vel)

 
 
09h 30m 41.97s -40° 28' 00.2" P.A. 139.00 sep 0.9 mag 3.91,5.12 Sp F0IV+F3IV dist. 18.81 pc (61.36 l.y.)
 
 
Coord 2000 09307-4028 Discov num COP   1 Comp Coord arcsec 2000 09 30 41.97 -40 28 00.2
Date first 1883 Date last 2021 Obs 167
Pa first 45 Pa last 139 P.A. Now (θ) 146.4°
Sep first 0.8 Sep last 0.898 Sep. Now (ρ) 0.815"
Mag pri 3.91 Mag sec 5.12 delta mag (ΔM) 1.21 Spectral class F0IV+F3IV (yellow-white/yellow-white)
Pri motion ra -191 Sec motion ra -191
Pri motion dec +073 Sec motion dec +073
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Psi Vel Var name NSV4513 Vel Constellation Vela SAO 221234
HIP 46651 Tycho2 7696-02620-1 Gaia DR2 5426587107145955712 HD 82434
HR 3786 GC 13140 GL Gl 351A CD CD-39 5580
CP CP-39 3651 Bayer Psi Velorum Bayer name Psi Vel Distance 18.81
Distance ly 61.36 Bayer greek ψ Vel
 
 
ORBITAL ELEMENTS
 
 
Period (P)34.12y± 0.13 Periastron (T)2004.07y± 0.04 Semi-major axis (a)0.81a± 0.002
Eccentricity (e)0.439± 0.003 Inclination (i)58.4°± 0.2 Longitude of periastron (ω)47.7°± 0.6
Node (Ω)288.2°± 0.1 Notesn ReferenceMsn2021a
Equinox Last observation2021 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 261.0 0.534
2001 272.2 0.541
2002 283.7 0.522
2003 297.0 0.461
2004 316.3 0.361
2005 351.2 0.267
2006 38.2 0.284
2007 67.7 0.401
2008 82.8 0.537
2009 91.9 0.662
2010 98.3 0.767
2011 103.3 0.852
2012 107.5 0.918
2013 111.1 0.966
2014 114.5 1.000
2015 117.7 1.019
2016 120.8 1.026
2017 123.9 1.021
2018 127.1 1.006
2019 130.4 0.982
2020 133.9 0.950
2021 137.6 0.911
2022 141.8 0.865
2023 146.4 0.815
2024 151.6 0.761
2025 157.7 0.706
2026 164.8 0.650
2027 173.2 0.598
2028 183.1 0.552
2029 194.6 0.515
2030 207.5 0.493


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



 
 


wds09307-4028b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic