83 Aquarii

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83 Aquarii
Location of 83 Aquarii (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Aquarius
Right ascension 23 h 05 m 09.78684 s [1]
Declination ?07° 41′ 37.6853″ [1]
Apparent magnitude  (V) 5.43 [2] (6.20/6.34) [3]
Characteristics
Spectral type F2 Vn + F2 V [3]
U?B color index +0.07 [2]
B?V color index +0.30 [2]
Astrometry
Radial velocity (R v ) ?13 [4]  km/s
Proper motion (μ) RA:  +122.41 [1]   mas / yr
Dec.:  +7.11 [1]   mas / yr
Parallax (π) 15.57 ± 0.61  mas [1]
Distance 209 ± 8  ly
(64 ± 3  pc )
Orbit [5]
Companion 83 Aquarii B
Period (P) 21.840 ± 0.019 yr
Semi-major axis (a) 0.2026 ± 0.0007 ″
Eccentricity (e) 0.3878 ± 0.0025
Inclination (i) 48.01 ± 0.42 °
Longitude of the node (Ω) 204.87 ± 0.50 °
Periastron epoch (T) 1983.108 ± 0.022
Argument of periastron (ω)
(secondary) 		82.83 ± 0.45 °
Other designations
BD ?08 6018, h Aquarii, [6] HD 218060, HIP 113996, HR  8782, SAO 146498. [7]
Database references
SIMBAD data

83 Aquarii (abbreviated 83 Aqr ) is 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 209 light-years (64 parsecs ) 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 [ edit ]

  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, arXiv : 0708.1752 , Bibcode : 2007A&A...474..653V , doi : 10.1051/0004-6361:20078357 , S2CID   18759600 .
  2. ^ a b c d Nicolet, B. (October 1978), "Catalogue of homogeneous data in the UBV photoelectric photometric system", Astronomy and Astrophysics Supplement 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, arXiv : 0806.2878 , Bibcode : 2008MNRAS.389..869E , doi : 10.1111/j.1365-2966.2008.13596.x , S2CID   14878976 .
  4. ^ Wilson, Ralph Elmer (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication , Washington: Carnegie Institution of Washington , Bibcode : 1953GCRV..C......0W .
  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. ^ Kostjuk, N. D. (2004). "VizieR Online Data Catalog: HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index (Kostjuk, 2002)". VizieR On-line Data Catalog: IV/27A. Originally Published in: Institute of Astronomy of Russian Academy of Sciences (2002) . 4027 . Bibcode : 2004yCat.4027....0K .
  7. ^ "* 83 Aqr" . SIMBAD . Centre de donnees astronomiques de Strasbourg . Retrieved 2007-07-14 .

External links [ edit ]

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