Misplaced Pages

HD 31093, also known as HR 1559, is a visual binary located in the southern constellation Caelum, the chisel. The components have a combined apparent magnitude of 5.83, making it faintly visible to the naked eye. Based on parallax measurements from the Hipparcos spacecraft, the system is estimated to be 268 light years distant. They appear to be receding from the Solar System with a heliocentric radial velocity of 24 km/s.

The components have stellar classifications of A1 and A4 V, indicating that both of them are A-type main-sequence stars. Since the components have a separation of 1⁄4 arcseconds, it is difficult to distinguish individually through a telescope. The primary has a mass 1.85 times that of the Sun while the secondary has a mass of 1.58 M_☉. They take 43 years to circle each other in an eccentric orbit.

References

1. ^ van Leeuwen, Floor (13 August 2007). "Validation of the new Hipparcos reduction". Astronomy & Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. eISSN 1432-0746. ISSN 0004-6361. Hipparcos record for this source at VizieR.
2. ^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 – L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
3. ^ Docobo, J. A.; Andrade, M. (26 October 2012). "Dynamical and physical properties of 22 binaries discovered by W. S. Finsen". Monthly Notices of the Royal Astronomical Society. 428 (1): 321–339. Bibcode:2013MNRAS.428..321D. doi:10.1093/mnras/sts045. eISSN 1365-2966. ISSN 0035-8711.
4. ^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M
5. ^ Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (November 2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889–896. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. eISSN 1521-3994. ISSN 0004-6337. S2CID 119323941.
6. Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
7. ^ Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (October 2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: A69. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. eISSN 1432-0746. ISSN 0004-6361.
8. 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.
9. "HD 31093". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 September 2022.

External links

• HR 1559
• CCDM J04515-3454
• Image HD 31093

v t e Constellation of Caelum
List of stars in Caelum
Stars	Bayer α β γ γ δ ζ λ ν Variable RR RV HR 1404 1418 1433 1509 1526 1559 1584 1631 1635 1651 HD 29559 30669 Other WASP-159 LHS 1678
Exoplanets HD 30669 b RR Caeli b WASP-159 b
Galaxies	NGC 1570 1571 1616 1701 Other HE0450-2958 PGC 16389 PKS 0438-436 PKS 0451-28
Category

• Caelum
• Henry Draper Catalogue objects
• Binary stars
• Hipparcos objects
• A-type main-sequence stars
• Bright Star Catalogue objects
• Durchmusterung objects