09307-4028 COP   1 (Psi Vel)

 
 
09h 30m 41.97s -40 28' 00.2" P.A. 127.8 sep 1.02 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
2017
Obs
156
Pa first
45
Pa last
125
P.A. Now (θ)
127.8°
Sep first
0.8
Sep last
1.0
Sep. Now (ρ)
1.02"
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
 
 
Precise pa
124.9
Precise sep
1.015
Name
Psi Vel
Constellation
Vela
SAO
221234
HIP
46651
Tycho2
7696-02620-1
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
last precise pa
124.9
last precise sep
1.015
 
 
ORBITAL ELEMENTS
 
 
Period (P)34.1y Periastron (T)1969.87y Semi-major axis (a)0.81a
Eccentricity (e)0.431 Inclination (i)57.2° Longitude of periastron (ω)46.2°
Node (Ω)289.1° Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000 0.537 262.0
2001 0.542 273.5
2002 0.521 285.4
2003 0.461 299.3
2004 0.363 319.3
2005 0.278 353.9
2006 0.297 38.2
2007 0.409 66.7
2008 0.541 82.0
2009 0.663 91.4
2010 0.767 98.1
2011 0.852 103.2
2012 0.918 107.6
2013 0.968 111.4
2014 1.003 114.8
2015 1.023 118.1
2016 1.031 121.3
2017 1.028 124.5
2018 1.015 127.8
2019 0.992 131.1
2020 0.961 134.7
2021 0.922 138.5
2022 0.878 142.7
2023 0.828 147.3
2024 0.775 152.6
2025 0.719 158.7
2026 0.664 165.8
2027 0.611 174.1
2028 0.564 184.0
2029 0.527 195.4
2030 0.504 208.2

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

grafico orbita





wds09307-4028e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09307-4028 COP 1 2006 145 46 0.3 3.91 5.12 F0IV+F3IV NOD 093041.97-402800.2
09307-4028 COP 1 2010 145 103 0.8 3.91 5.12 F0IV+F3IV NOD 093041.97-402800.2
09307-4028 COP 1 2012 146 108 0.9 3.91 5.12 F0IV F3IV NOD 093041.97-402800.2
09307-4028 COP 1 2013 148 112 1.0 3.91 5.12 F0IV F3IV NO 093041.97-402800.2
09307-4028 COP 1 2014 149 115 1.0 3.91 5.12 F0IV F3IV NO 093041.97-402800.2
09307-4028 COP 1 2015 151 118 1.0 3.91 5.12 F0IV+F3IV NO 093041.97-402800.2
09307-4028 COP 1 2016 152 122 1.0 3.91 5.12 F0IV+F3IV NO 093041.97-402800.2
09307-4028 COP 1 2017 156 125 1.0 3.91 5.12 F0IV+F3IV NO 093041.97-402800.2

If you need more information about this double, apply for a data request form to the WDS.