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HD 17943

From Wikipedia, the free encyclopedia

HD 17943
Observation data
Epoch J2000      Equinox J2000
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 mas/yr[1]
Dec.: 40.094 mas/yr[1]
Parallax (π)10.6465 ± 0.0374 mas[1]
Distance306 ± 1 ly
(93.9 ± 0.3 pc)
Absolute magnitude (MV)1.30[citation needed]
Other designations
BD−10 569, HD 17943, HIP 13421, HR 859, SAO 130160, TYC 5286-1109-1,[2] 33 G. Eridani[citation needed]
Database references
SIMBADdata

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. ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b c d "HD 17943". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 January 2024.
  3. ^ Johann Bayer (1603). Uranometria. p. 117.
  4. ^ Hoffleit, D.; Warren, W. H. Jr. (November 1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". Bibcode:1995yCat.5050....0H. Remarks for HR 859
  5. ^ Toone, John (March 2019). "Sigma Enigma. The case of sigma Eridanus" (PDF). British Astronomical Association Variable Star Section Circular (179): 18. Bibcode:2019BAAVC.179...18T.
This page was last edited on 27 March 2024, at 23:04
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