09307-4028 COP   1 (Psi Vel)

 
 
09H 30M 41.97S -40 28' 00.2" P.A. 126.2 SEP 1.1 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
2016
Obs
152
Pa first
45
Pa last
122
P.A. Now (θ)
126.2°
Sep first
0.8
Sep last
1.0
Sep. Now (ρ)
1.1"
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
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
121.6
last precise sep
1.017
 
 
ORBITAL ELEMENTS
 
 
Period (P)33.95y Periastron (T)1969.68y Semi-major axis (a)0.862a
Eccentricity (e)0.433 Inclination (i)58° Longitude of periastron (ω)44.3°
Node (Ω)291° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation1997
label rho theta
2000 0.562 266.4
2001 0.566 278.2
2002 0.537 290.4
2003 0.462 305.3
2004 0.352 328.4
2005 0.283 8.2
2006 0.340 50.3
2007 0.472 74.1
2008 0.614 87.0
2009 0.740 95.3
2010 0.847 101.3
2011 0.933 106.0
2012 1.000 110.0
2013 1.050 113.6
2014 1.083 116.9
2015 1.102 120.0
2016 1.108 123.1
2017 1.102 126.2
2018 1.084 129.3
2019 1.057 132.6
2020 1.021 136.1
2021 0.977 139.9
2022 0.926 144.0
2023 0.870 148.7
2024 0.810 154.0
2025 0.748 160.2
2026 0.686 167.6
2027 0.627 176.4
2028 0.576 186.8
2029 0.537 199.1
2030 0.514 212.8

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic