Zeta Tucanae

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Template:Short description

Zeta Tucanae
Template:Location mark
Location of ζ Tucanae (near center).
Observation data
Epoch J2000      Equinox J2000
Constellation Tucana
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 4.23
Characteristics
Spectral type F9.5 V[2]
U−B Template:Engvar 0.02[3]
B−V Template:Engvar 0.58[3]
Variable type None[4]
Astrometry
Radial velocity (Rv)8.8 ± 0.02[5] km/s
Proper motion (μ) RA: 1,707.42[1] mas/yr
Dec.: 1,164.30[1] mas/yr
Parallax (π)116.46±0.16 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)4.67[6]
Details
MassScript error: No such module "val".[7] Template:Solar mass
RadiusScript error: No such module "val".[7] Template:Solar radius
LuminosityScript error: No such module "val".[7] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[7] cgs
TemperatureScript error: No such module "val".[7] K
Metallicity [Fe/H]−0.18[8] dex
RotationScript error: No such module "val".[9] days
Rotational velocity (v sin i)3.0[10] km/s
AgeScript error: No such module "val".[7] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[11]
Database references
SIMBADdata

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Zeta Tucanae, Latinized from ζ Tucanae, is a star in the constellation Tucana. It is a spectral class F9.5 main sequence star with an apparent magnitude of +4.23. Despite having a slightly lower mass, this star is more luminous than the Sun.[12] Based upon parallax measurements by the Hipparcos spacecraft, it is approximately 28.0 light years from Earth.[1] This is one of the least variable stars observed during the Hipparcos mission.[4][13]

The composition and mass of this star are very similar to the Sun, with a slightly lower mass and an estimated age of 5.3 billion years. The solar-like qualities make it a target of interest for investigating the possible existence of a life-bearing planet.[13]

Based upon an excess emission of infrared radiation at 70 micrometres, this system is believed to have a debris disk. The disk is orbiting the star at a minimum radius of 2.3 astronomical units. It is radiating with a maximum temperature of 218 K.[14] As of 2009, no planet has been discovered in orbit around this star.[15]

The components of this star's space velocity are U = −60, V = −4 and W = −38 km/s. These correspond to the velocity toward the Galactic Center, the velocity along the direction of galactic rotation, and the velocity toward the north galactic pole, respectively.[16] It is orbiting through the galaxy at a mean distance of 8.4 kpc from the Galactic Center and with an orbital eccentricity of 0.16.[13]

See also

References

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  1. ↑ a b c d e f Script error: No such module "citation/CS1". Note: see VizieR catalogue I/311.
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  3. ↑ a b Script error: No such module "Citation/CS1".
  4. ↑ a b Script error: No such module "Citation/CS1".
  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "Citation/CS1".
  7. ↑ a b c d e f Script error: No such module "Citation/CS1".
  8. ↑ Script error: No such module "Citation/CS1".
  9. ↑ Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "Citation/CS1".
  13. ↑ a b c Script error: No such module "Citation/CS1".
  14. ↑ Script error: No such module "Citation/CS1".
  15. ↑ Script error: No such module "Citation/CS1".
  16. ↑ Script error: No such module "Citation/CS1".

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External links

Template:Stars of Tucana

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