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39 Aquarii

<tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Astrometry</th></tr></th></tr><tr><th colspan="2" style="text-align: center"></tr><tr style="vertical-align:top;"><td>Radial velocity (Rv)</td><td>+15.2[5] km/s</td></tr><tr style="vertical-align:top;"><td>Proper motion (μ)</td><td> RA: +23.89[1] mas/yr
Dec.: -47.43[1] mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>23.78 ± 0.72[1]mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>137 ± 4 ly
(42 ± 1 pc)</td></tr><tr style="vertical-align:top;"><td>Absolute magnitude (MV)</td><td>2.92[6]</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Details</th></tr></th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:baseline;"><td>Surface gravity (log g)</td><td>3.99[3] cgs</td></tr><tr style="vertical-align:baseline;"><td>Temperature</td><td>6,806[3] K</td></tr><tr style="vertical-align:baseline;"><td>Metallicity [Fe/H]</td><td>–0.21[3] dex</td></tr><tr style="vertical-align:baseline;"><td>Age</td><td>1.8[6] Gyr</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Other designations</th></tr><tr><td colspan="2">
BD-14 6229, HD 210705, HIP 109624, HR 8462, SAO 164923.[4]
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39 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 22h 12m 25.75608s[1]
Declination −14° 11′ 38.2442″[1]
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Characteristics
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39 Aquarii is a star in the constellation Aquarius. It is a faint naked eye star with an apparent visual magnitude of 6.03.[2] Based upon an annual parallax shift of 23.78 measured with a 3% margin of error,[1] this star is at a distance of around Script error: No such module "convert". from Earth.

The stellar classification of this star is F0 V;[3] hence it belongs to the category of F-type main sequence stars. It is a double star with a magnitude 9.3 companion at an angular separation of 0.6 arcseconds along a position angle of 257°.[7]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357. 
  2. 2.0 2.1 2.2 Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa 27: 11, Bibcode:1968MNSSA..27...11C. 
  3. 3.0 3.1 3.2 3.3 3.4 Cenarro, A. J. et al. (January 2007), "Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters", Monthly Notices of the Royal Astronomical Society 374 (2): 664–690, Bibcode:2007MNRAS.374..664C, arXiv:astro-ph/0611618, doi:10.1111/j.1365-2966.2006.11196.x. 
  4. 4.0 4.1 "39 Aqr -- Variable Star", SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-16. 
  5. Wilson, Ralph Elmer (1953), General catalogue of stellar radial velocities, Carnegie Institution of Washington, Bibcode:1953QB901.W495...... 
  6. 6.0 6.1 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, Bibcode:2004A&A...418..989N, arXiv:astro-ph/0405198, doi:10.1051/0004-6361:20035959. 
  7. Fabricius, C.; Makarov, V. V. (April 2000), "Two-colour photometry for 9473 components of close Hipparcos double and multiple stars", Astronomy and Astrophysics 356: 141–145, Bibcode:2000A&A...356..141F. 

External links