HD 17943

Last updated
HD 17943
Eridanus constellation map.svg
Red circle.svg
Location of HD 17943 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Eridanus [1]
Right ascension 02h 52m 50.74s [2]
Declination −09° 26′ 28.4″ [2]
Apparent magnitude  (V)6.325 [3]
Characteristics
Evolutionary stage main-sequence star [4]
Spectral type A4V [5]
Astrometry
Radial velocity (Rv)38.07±0.28 [2] km/s
Proper motion (μ)RA: +109.825 mas/yr [2]
Dec.: +40.094 mas/yr [2]
Parallax (π)10.6465±0.0374  mas [2]
Distance 306 ± 1  ly
(93.9 ± 0.3  pc)
Absolute magnitude  (MV)1.37 [1]
Details
Mass 1.8 [6]   M☉
Radius 2.6 [6]   R☉
Luminosity 21 [6]   L☉
Surface gravity (log g)3.88 [6]   cgs
Temperature 7,749 [6]   K
Metallicity [Fe/H]−0.01 [7]   dex
Rotational velocity (v sin i)134 [4]  km/s
Age 735 [7]   Myr
Other designations
BD−10 569, HD 17943, HIP 13421, HR 859, SAO 130160, TYC 5286-1109-1, [8] 33 G. Eridani [9]
Database references
SIMBAD data

HD 17943, or HR 859, is a high proper-motion star in the constellation of Eridanus. It has an apparent magnitude of 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.

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; he assigned this designation to a 4th-magnitude-star near Eta Eridani, on the opposite side to Rho Eridani, but no naked-eye star is found in that position in modern star atlases. [10] [11] [12]

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
  2. 1 2 3 4 5 6 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.
  3. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355. Bibcode:2000A&A...355L..27H.
  4. 1 2 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv: 1201.2052 . Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.
  5. ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
  6. 1 2 3 4 5 Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694 . Bibcode:2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467 .
  7. 1 2 Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv: 1606.08814 . Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.
  8. ↑ "HD 17943". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 13 January 2024.
  9. ↑ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  10. ↑ Johann Bayer (1603). Uranometria. p. 117.
  11. ↑ Hoffleit, D.; Warren, W. H. Jr. (November 1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". Vizier Online Data Catalog. Bibcode:1995yCat.5050....0H. Remarks for HR 859
  12. ↑ Toone, John (March 2019). "Sigma Enigma. The case of sigma Eridanus" (PDF). British Astronomical Association Variable Star Section Circular. 179 (179): 18. Bibcode:2019BAAVC.179...18T.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.