Astronomy:HD 17943
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Short description: High proper-motion star in Eridanus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 02h 52m 50.74s[1] |
| Declination | −09° 26′ 28.4″[1] |
| Apparent magnitude (V) | 6.325[2] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | A4V[2] |
| Astrometry | |
| Radial velocity (Rv) | 38.07±0.28[1] km/s |
| Proper motion (μ) | RA: 109.825[1] mas/yr Dec.: 40.094[1] mas/yr |
| Parallax (π) | 10.6465 ± 0.0374[1] mas |
| Distance | 306 ± 1 ly (93.9 ± 0.3 pc) |
| Absolute magnitude (MV) | 1.30[citation needed] |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 17943, or HR 859, is a high proper-motion star in the constellation of Eridanus. It has a right ascension of 02h 52m 50.74s and a declination of −09° 26′ 28.4″. Its apparent magnitude is equal to 6.325. Based on parallax measurements from the Gaia spacecraft, it is at a distance of 306 light-years (94 parsecs). It belongs to spectral class A4V.[2][1]
This star is incorrectly called by the Bayer designation "Sigma Eridani" in the 1991 edition of the Bright Star Catalogue. Bayer's Sigma Eridani is in fact non-existent.[3][4][5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 "HD 17943". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+17943.
- ↑ Johann Bayer (1603). Uranometria. p. 117. https://www.e-rara.ch/zut/content/zoom/77531.
- ↑ Hoffleit, D.; Warren, W. H., Jr. (November 1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=V/50. Remarks for HR 859
- ↑ Toone, John (March 2019). "Sigma Enigma. The case of sigma Eridanus". British Astronomical Association Variable Star Section Circular (179): 18. Bibcode: 2019BAAVC.179...18T. https://britastro.org/vss/vsscads/VSSC179.pdf#page=18.
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