HD 14412 is a single[9] star in the southern constellation of Fornax. It has the Gould designation 22 G. Fornacis, while HD 14412 is the Henry Draper Catalogue designation. The star 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 77.9″, this system is 42 light-years distant from the Sun. It is drifting further away with a radial velocity of +7.5 km/s.[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Fornax |
| Right ascension | 02h 18m 58.50469s[1] |
| Declination | −25° 56′ 44.4735″[1] |
| Apparent magnitude (V) | 6.33[2] |
| Characteristics | |
| Spectral type | G8V[2] |
| U−B color index | +0.20[3] |
| B−V color index | +0.71[3] |
| Astrometry | |
| Radial velocity (Rv) | +7.459±0.0040[4] km/s |
| Proper motion (μ) | RA: –217.662[1] mas/yr Dec.: +444.584[1] mas/yr |
| Parallax (π) | 77.9153 ± 0.0602 mas[1] |
| Distance | 41.86 ± 0.03 ly (12.834 ± 0.010 pc) |
| Absolute magnitude (MV) | 5.83[5] |
| Details | |
| Mass | 0.821[6] M☉ |
| Radius | 0.74+0.01 −0.03[1] R☉ |
| Luminosity | 0.443[1] L☉ |
| Surface gravity (log g) | 4.59[2] cgs |
| Temperature | 5,482+104 −50[1] K |
| Metallicity [Fe/H] | –0.46[2] dex |
| Rotational velocity (v sin i) | 3.26[7] km/s |
| Age | 9.61[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This star has a stellar classification of G8V,[2] indicating that it is a main-sequence star. Based upon stellar models, it has 82%[6] of the Sun's mass and 77%[1] of the radius. HD 14412 is spinning with a projected rotational velocity of 3.26 km/s[7] and is about 9.61 billion years old.[2] It is radiating 44%[1] of the luminosity of the Sun from its photosphere at an effective temperature of 5,482 K,[1] giving it the yellow-hued glow of a G-type star.[10]
HD 14412 has been examined for signs of an orbiting debris disk or a planetary companion, but as of 2012 none has been discovered.[11]
References
edit- ^ a b c d e f g h i j k Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c d e f g h Maldonado, J.; et al. (May 2012), "Metallicity of solar-type stars with debris discs and planets", Astronomy and Astrophysics, 541: A40, arXiv:1202.5884, Bibcode:2012A&A...541A..40M, doi:10.1051/0004-6361/201218800, S2CID 46328823.
- ^ a b Carney, B. W. (September 1978), "Southern subdwarf photometry", Astronomical Journal, 83: 1087–1089, Bibcode:1978AJ.....83.1087C, doi:10.1086/112295.
- ^ a b Soubiran, C.; et al. (April 2013), "The catalogue of radial velocity standard stars for Gaia. I. Pre-launch release", Astronomy & Astrophysics, 552: 11, arXiv:1302.1905, Bibcode:2013A&A...552A..64S, doi:10.1051/0004-6361/201220927, S2CID 56094559, A64
- ^ Holmberg, J.; et al. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
- ^ a b 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. S2CID 18775378.
- ^ a b 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" (PDF), Astronomy and Astrophysics, 520: A79, arXiv:1002.4391, Bibcode:2010A&A...520A..79M, doi:10.1051/0004-6361/200913725, S2CID 43455849, archived from the original (PDF) on 2017-09-22, retrieved 2018-10-24.
- ^ "LHS 1387 -- High proper-motion Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2014-01-26.
- ^ Halbwachs, J. -L; et al. (2018). "Multiplicity among solar-type stars. IV. The CORAVEL radial velocities and the spectroscopic orbits of nearby K dwarfs". Astronomy and Astrophysics. 619: A81. arXiv:1808.04605. Bibcode:2018A&A...619A..81H. doi:10.1051/0004-6361/201833377. S2CID 119437322.
- ^ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2012-01-16.
- ^ 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, S2CID 46328823.
External links
edit- "4C00205". ARICNS. Archived from the original on 2011-06-07. Retrieved 2006-08-15.
- "HD 14412 -- High proper-motion Star". SIMBAD: Centre de Données astronomiques de Strasbourg. Retrieved 2006-08-15.