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83 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>–13[4] km/s</td></tr><tr style="vertical-align:top;"><td>Proper motion (μ)</td><td> RA: +122.41[1] mas/yr
Dec.: +7.11[1] mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>15.57 ± 0.61[1]mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>209 ± 8 ly
(64 ± 3 pc)</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><td style="background-color: #FFFFC0;" colspan="2" align=center>Orbit[5]</td></tr><tr style="vertical-align:baseline;"><td>Companion</td><td>83 Aquarii B</td></tr><tr style="vertical-align:baseline;"><td>Period (P)</td><td>21.840 ± 0.019yr</td></tr><tr style="vertical-align:baseline;"><td>Semi-major axis (a)</td><td>0.2026 ± 0.0007"</td></tr><tr style="vertical-align:baseline;"><td>Eccentricity (e)</td><td>0.3878 ± 0.0025</td></tr><tr style="vertical-align:baseline;"><td>Inclination (i)</td><td>48.01 ± 0.42°</td></tr><tr style="vertical-align:baseline;"><td>Longitude of the node (Ω)</td><td>204.87 ± 0.50°</td></tr><tr style="vertical-align:baseline;"><td>Periastron epoch (T)</td><td>1983.108 ± 0.022</td></tr><tr style="vertical-align:baseline;"><td>Argument of periastron (ω)
(secondary)</td><td>82.83 ± 0.45°</td></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Other designations</th></tr><tr><td colspan="2">
h Aquarii, BD–08 6018, HD 218060, HIP 113996, HR 8782, SAO 146498.[6]
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83 Aquarii <tr><td colspan="2" style="text-align:center;">

Location of 83 Aquarii (circled)
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Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 05m 09.78684s[1]
Declination –07° 41′ 37.6853″[1]
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This page is a soft redirect. Apparent magnitude (V)

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This page is a soft redirect. 5.43[2] (6.20/6.34)[3]

Characteristics
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This page is a soft redirect. F2 Vn + F2 V[3]

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This page is a soft redirect. U−B color index

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This page is a soft redirect. +0.07[2]

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This page is a soft redirect. B−V color index

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This page is a soft redirect. +0.30[2]

Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.) </div>

83 Aquarii (h Aquarii) is the Flamsteed designation for a binary star system in the equatorial constellation of Aquarius. The combined apparent visual magnitude of the pair is 5.43,[2] which is faintly visible to the naked eye. Based upon an annual parallax shift of 15.57 milliarcseconds,[1] it is located at a distance of around Script error: No such module "convert". from Earth.

Both stars are F-type main sequence stars.[3] The first component has an apparent magnitude of 6.20; the second is magnitude 6.34.[3] They are orbiting each other with a period of 21.84 years with an eccentricity of 0.388.[5]

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. (October 1978), "Catalogue of homogeneous data in the UBV photoelectric photometric system", Astronomy and Astrophysics, Supplemental Series 34: 1–49, Bibcode:1978A&AS...34....1N. 
  3. ^ 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. 
  4. ^ Wilson, Ralph Elmer (1953), General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, Bibcode:1953QB901.W495...... 
  5. ^ a b Hartkopf, W. I.; Mason, B. D.; McAlister, H. A. (1996), "Binary star orbits from speckle interferometry. VIII. Orbits of 37 close visual systems", Astronomical Journal 111: 370–392, Bibcode:1996AJ....111..370H, doi:10.1086/117790. 
  6. ^ "83 Aqr -- Star", SIMBAD Astronomical Database, retrieved 2007-07-14 

External links