Location of 83 Aquarii (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 23 05 09.78684 |
| Declination | –07° 41′ 37.6853″ |
| Apparent magnitude (V) | 5.43 (6.20/6.34) |
| Characteristics | |
| Spectral type | F2 Vn + F2 V |
| U−B color index | +0.07 |
| B−V color index | +0.30 |
| Astrometry | |
| Radial velocity (Rv) | –13 km/s |
| Proper motion (μ) | RA: +122.41 mas/yr Dec.: +7.11 mas/yr |
| Parallax (π) | 15.57 ± 0.61 mas |
| Distance | 209 ± 8 ly (64 ± 3 pc) |
| Orbit | |
| 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, HD 218060, HIP 113996, HR 8782, SAO 146498. | |
| 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, which is faintly visible to the naked eye. Based upon an annual parallax shift of 15.57 milliarcseconds, it is located at a distance of around 209 light-years (64 parsecs) from Earth.
Both stars are F-type main sequence stars. The first component has an apparent magnitude of 6.20; the second is magnitude 6.34. They are orbiting each other with a period of 21.84 years with an eccentricity of 0.388.
References
- ^ 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.
- ^ 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.
- ^ 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.
- 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.
- ^ 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.
- 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.
- "* 83 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2007-07-14.
External links
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