103 Aquarii
| Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 23h 41m 34.48853s[1] |
| Declination | −18° 01′ 37.4731″[1] |
| Apparent magnitude (V) | 5.34[2] |
| Characteristics | |
| Spectral type | K4/K5 III[3] |
| B−V color index | +1.57[2] |
| Astrometry | |
| Radial velocity (Rv) | +25.1[4] km/s |
| Proper motion (μ) | RA: –41.25[1] mas/yr Dec.: –71.85[1] mas/yr |
| Parallax (π) | 4.31 ± 0.31[1] mas |
| Distance | 760 ± 50 ly (230 ± 20 pc) |
| Details | |
| Surface gravity (log g) | 1.59[5] cgs |
| Temperature | 3,910[5] K |
| Metallicity [Fe/H] | –0.18[5] dex |
| Other designations | |
103 Aquarii (abbreviated 103 Aqr) is a star in the equatorial constellation of Aquarius. 103 Aquarii is the Flamsteed designation although it also bears the Bayer designation A1 Aquarii.[7] It is faint but visible to the naked eye with an apparent visual magnitude of 5.34.[2] Based upon an annual parallax shift of 4.31 milliarcseconds, the distance to this star is around 760 light-years (230 parsecs).[1] This is classified as an evolved K-type giant star.[3]
References
- 1 2 3 4 5 6 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.
- 1 2 3 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.
- 1 2 Houk, Nancy; Smith-Moore, M. (1978), "Michigan catalogue of two-dimensional spectral types for the HD stars", Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars (Ann Arbor: Dept. of Astronomy, University of Michigan) 4, Bibcode:1988mcts.book.....H.
- ↑ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Washington (Carnegie Institute of Washington, D.C.): 0, Bibcode:1953GCRV..C......0W.
- 1 2 3 McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants". Astrophysical Journal Supplement Series 74: 1075–1128. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527.
- ↑ "103 Aqr -- Star", SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-16
- ↑ HD 222547, database record, HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index, N. D. Kostjuk, Institute of Astronomy of Russian Academy of Sciences, 2002; CDS ID IV/27A.
External links
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