Zeta Tucanae

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Zeta Tucanae
Location of ζ Tucanae (near center).
Observation data
Epoch J2000      Equinox J2000
Constellation Tucana
Right ascension 00h 20m 04.25995s[1]
Declination −64° 52′ 29.2549″[1]
Apparent magnitude (V) 4.23
Characteristics
Spectral type F9.5 V[2]
U−B color index 0.02[3]
B−V color index 0.58[3]
Variable type None[4]
Distance
28.01 ± 0.04 ly
(8.59 ± 0.01 pc)
Absolute magnitude (MV)4.67[6]
Details
Gyr
LTT 167[14]
Database references
SIMBADdata

Zeta Tucanae,

light years from Earth.[1] This is one of the least variable stars observed during the Hipparcos mission.[4][15]

The composition and mass of this star are very similar to the Sun, with a slightly lower mass and an estimated age of three billion years. The solar-like qualities make it a target of interest for investigating the possible existence of a life-bearing planet.[15]

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.[12] As of 2009, no planet has been discovered in orbit around this star.[16]

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.[17] 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.[15]

See also

References

  1. ^
    S2CID 18759600 Note: see VizieR catalogue I/311
    .
  2. S2CID 119476992
  3. ^
    Bibcode:1966CoLPL...4...99J
    .
  4. ^
    doi:10.1051/0004-6361:20000567
    .
  5. Bibcode:1967IAUS...30...57E
    .
  6. Bibcode:1999A&A...343..222E
  7. ^
    S2CID 119347084
    .
  8. ^
    S2CID 118565025
  9. ^
    S2CID 16775366
    .
  10. doi:10.1093/mnras/stv1441
    .
  11. S2CID 18041021
    .
  12. ^
    S2CID 54940779
    .
  13. S2CID 27151456
    .
  14. ^ "LHS 5 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2010-05-21.
  15. ^
    S2CID 119459291
    .
  16. S2CID 16636256
    .
  17. ^ Woolley, Richard van der Riet (1970). "Catalogue of Stars within 25 Parsecs of the Sun". Royal Observatory Annals. 5. Herstmonceux, Royal Greenwich Observatory. Retrieved 2009-09-02.

External links

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