HD 14412

HD 14412
Observation data
Epoch J2000      Equinox J2000
Constellation Fornax
Right ascension 02h 18m 58.50473s[1]
Declination −25° 56′ 44.4753″[1]
Apparent magnitude (V) 6.33[2]
Characteristics
Spectral type G8 V[2]
U−B color index +0.20[3]
B−V color index +0.71[3]
Astrometry
Radial velocity (Rv)+7.2[4] km/s
Proper motion (μ) RA: –217.55[1] mas/yr
Dec.: +444.44[1] mas/yr
Parallax (π)78.93 ± 0.35[1] mas
Distance41.3 ± 0.2 ly
(12.67 ± 0.06 pc)
Details
Mass0.821[5] M☉
Radius0.77[5] R☉
Surface gravity (log g)4.59[2] cgs
Temperature5,359[2] K
Metallicity [Fe/H]–0.46[2] dex
Rotational velocity (v sin i)3.26[6] km/s
Age9.61[2] Gyr
Other designations
22 G. Fornacis, CD -26°828, GCTP 479.00, GJ 95, HIP 10798, HR 683, LHS 1387, LTT 1178, SAO 167697.[7]

HD 14412 (22 G. Fornacis) is the Henry Draper catalogue designation for an ordinary star in the southern constellation Fornax. It has an apparent visual magnitude of 6.33,[2] which, according to the Bortle scale, can be dimly seen with the naked eye from rural locations. Based upon an annual parallax shift of 0.078.93 arc seconds as measured by the Hipparcos satellite, this system is 41.3 light-years (12.67 parsecs) from Earth.

This star has a stellar classification of G8 V,[2] indicating that it is a main sequence star. Based upon models, it has 82% of the Sun's mass and 77% of the radius.[5] HD 14412 is spinning with a projected rotational velocity of 3.26 km/s[6] and is about 9.61 billion years old.[2] The stellar atmosphere has an effective temperature of 5,359 K,[2] giving it the yellow-hued glow of a G-type star.[8]

HD 14412 has been examined for signs of an orbiting debris disk or a planetary companion, but as of 2012 none has been discovered.[9]

References

  1. 1 2 3 4 5 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. 1 2 3 4 5 6 7 8 9 10 Maldonado, J.; et al. (May 2012), "Metallicity of solar-type stars with debris discs and planets", Astronomy and Astrophysics 541, arXiv:1202.5884, Bibcode:2012A&A...541A..40M, doi:10.1051/0004-6361/201218800.
  3. 1 2 Carney, B. W. (September 1978), "Southern subdwarf photometry", Astronomical Journal 83: 1087–1089, Bibcode:1978AJ.....83.1087C, doi:10.1086/112295.
  4. ↑ Nordström, B.; et al. (May 2004), "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14,000 F and G dwarfs", Astronomy and Astrophysics 418: 989–1019, arXiv:astro-ph/0405198, Bibcode:2004A&A...418..989N, doi:10.1051/0004-6361:20035959.
  5. 1 2 3 Takeda, Genya; et al. (2007). "Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog". The Astrophysical Journal Supplement Series 168 (2): 297–318. arXiv:astro-ph/0607235. Bibcode:2007ApJS..168..297T. doi:10.1086/509763.
  6. 1 2 Martínez-Arnáiz, R.; et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics 520: A79, arXiv:1002.4391, Bibcode:2010A&A...520A..79M, doi:10.1051/0004-6361/200913725.
  7. ↑ "LHS 1387 -- High proper-motion Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2014-01-26.
  8. ↑ "The Colour of Stars", Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004, retrieved 2012-01-16.
  9. ↑ Maldonado, J.; et al. (May 2012), "Metallicity of solar-type stars with debris discs and planets", Astronomy & Astrophysics 541: A40, arXiv:1202.5884, Bibcode:2012A&A...541A..40M, doi:10.1051/0004-6361/201218800.

External links

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