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86 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[4] km/s</td></tr><tr style="vertical-align:top;"><td>Proper motion (μ)</td><td> RA: +58.86[1] mas/yr
Dec.: –1.74[1] mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>15.08 ± 0.72[1]mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>220 ± 10 ly
(66 ± 3 pc)</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>3.10[5] cgs</td></tr><tr style="vertical-align:baseline;"><td>Temperature</td><td>4,900[5] K</td></tr><tr style="vertical-align:baseline;"><td>Metallicity [Fe/H]</td><td>–0.14[5] dex</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">
c01 Aquarii, CD–24 17497, HD 218240, HIP 114119, HR 8789, SAO 191651.[6]
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86 Aquarii <tr><td colspan="2" style="text-align:center;">

Location of 86 Aquarii (circled)
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Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 06m 40.84483s[1]
Declination –23° 44′ 35.2344″[1]
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This page is a soft redirect. Apparent magnitude (V)

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Characteristics
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This page is a soft redirect. G8 III[3]

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This page is a soft redirect. +0.90[2]

86 Aquarii is the Flamsteed designation for a binary star[7] system in the equatorial constellation of Aquarius. It is faint but visible to the naked eye with an apparent visual magnitude of +4.47.[2] Based upon parallax measurements, the distance to this star is about Script error: No such module "convert"..[1]

The two components of this system have an angular separation of 0.25 arcseconds.[7] The brighter component is a giant star with a spectral classification of G8 III[3] and an apparent magnitude of 4.79.[7] The effective temperature of its outer atmosphere is 4,900 K,[5] giving it the yellowish glow of a G-type star.[8] The fainter component is a star of magnitude 6.77.[7]

References

  1. ^ a b c d e f 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. ^ a b c d Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series 34: 1–49, Bibcode:1978A&AS...34....1N. 
  3. ^ a b Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H. 
  4. ^ Wilson, Ralph Elmer (1953), General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, Bibcode:1953QB901.W495...... 
  5. ^ a b c d McWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances", Astrophysical Journal Supplement Series 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527. 
  6. ^ "86 Aqr -- Star", SIMBAD (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-13. 
  7. ^ a b c d Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society 389 (2): 869–879. Bibcode:2008MNRAS.389..869E. arXiv:0806.2878. doi:10.1111/j.1365-2966.2008.13596.x. 
  8. ^ "The Colour of Stars", Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004, retrieved 2012-01-16 

External links