Psi Velorum

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Template:Short description

Psi Velorum
Template:Location mark
Location of ψ Velorum
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Vela
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) +3.58[2] (3.91 + 5.12)[3]
Characteristics
Evolutionary stage Main sequence[4] or subgiant[5]
Spectral type F0 IV + F3 IV[5]
U−B Template:Engvar +0.00[2]
B−V Template:Engvar +0.36[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[6] km/s
Proper motion (μ) RA: −147.98[1] mas/yr
Dec.: +61.35[1] mas/yr
Parallax (π)53.15±0.37 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)2.56[7]
Orbit[8]
Period (P)33.95 yr
Semi-major axis (a)0.862″
Eccentricity (e)0.433
Inclination (i)58.0°
Longitude of the node (Ω)291.0°
Periastron epoch (T)1969.68
Argument of periastron (ω)
(secondary)		44.3°
Details[9]
ψ Vel A
Mass1.46 Template:Solar mass
RadiusTemplate:Solar radius calculatorTemplate:Efn Template:Solar radius
Luminosity4.21 Template:Solar luminosity
Temperature6,837 K
Metallicity [Fe/H]Script error: No such module "val".[5] dex
ψ Vel B
Mass1.34 Template:Solar mass
RadiusTemplate:Solar radius calculatorTemplate:Efn Template:Solar radius
Luminosity3.05 Template:Solar luminosity
Temperature6,148 K
Metallicity [Fe/H]Script error: No such module "val".[5] dex
Other designations
Template:Odlist[10]
Database references
SIMBADψ Vel
ψ Vel A
ψ Vel B
ARICNSψ Vel A
ψ Vel B

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Psi Velorum, Latinized from ψ Velorum, is a binary star system in the southern constellation of Vela. Based upon an annual parallax shift of 53.15 mas as seen from Earth, it is located 61.4 light years from the Sun. It is visible to the naked eye with a combined apparent visual magnitude of +3.58.[2] The motion of this system through space makes it a candidate member of the Castor stellar kinematic group.[11]

The two components of this system orbit their common barycenter with a period of 33.95 years and an eccentricity of 0.433. The semimajor axis of their orbit has an angular size of 0.862 arc seconds.[8] Psi Velorum A and Psi Velorum B have apparent magnitudes of +3.91 and +5.12[3] and spectral types F0 IV and F3 IV, suggesting they are F-type subgiants.[5] Analysis of the stars' properties suggest that they are main sequence stars rather than subgiants,[4] and spectral types of F3V + F have also been published.[9] The secondary has been reported to be variable between magnitude 4.5 and 5.1.[12]

Notes

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References

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  1. ↑ a b c d e Script error: No such module "citation/CS1".
  2. ↑ a b c d Script error: No such module "citation/CS1".
  3. ↑ a b Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b c d e Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ a b Script error: No such module "citation/CS1".
  9. ↑ a b Script error: No such module "citation/CS1".
  10. ↑ Template:Cite simbad
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Vela

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