HD 59686 Ab
In this article we are going to address the issue of HD 59686 Ab, which has generated a great impact on different aspects of society. Since its emergence, HD 59686 Ab has aroused interest and debate in different areas, both academic and professional. Over the years, HD 59686 Ab has evolved and gained relevance in different contexts, causing significant changes in the way people interact and function in their environment. Through this article, we will explore the various facets of HD 59686 Ab and analyze its influence today.
| Discovery[1][2] | |
|---|---|
| Discovered by | Mitchell et al., Ortiz et al. |
| Discovery site | Lick Observatory |
| Discovery date | November 16, 2003 (announced) October 2016 (published) |
| Doppler spectroscopy | |
| Orbital characteristics[2] | |
| Epoch 2451482.024 | |
| 1.0860+0.0006 −0.0007 AU | |
| Eccentricity | 0.05+0.03 −0.02 |
| 299.36+0.26 −0.31 d | |
| 301°+26° −85° | |
| 121°+28° −24° | |
| Star | HD 59686 A |
| Physical characteristics[2] | |
| Mass | ≥6.92+0.18 −0.24 MJ |
HD 59686 Ab is an exoplanet that orbits the giant star HD 59686 A in a close binary star system. It has a nearly circular orbit with a period of 300 days and a semi-major axis of 1.09 AU, slightly greater than the distance between Earth and the Sun. It has a minimum mass 6.9 times that of Jupiter, with the true mass depending on the orbital inclination, which is not yet known.[2] HD 59686 Ab was discovered by radial velocity and first announced in November 2003,[1] but the discovery was not formally published until 2016.[2]
HD 59686, along with Nu Octantis, is one of the closest binary star systems known to host a planet orbiting a single star (i.e., not a circumbinary planet), posing a challenge to theories of planet formation.[2]
References
- ^ a b Mitchell, D.; Frink, S.; Quirrenbach, A.; Fischer, D.; Marcy, G.; Butler, P. (2003). "Four Substellar Companions Found Around Nearby K Giant Stars". Bulletin of the American Astronomical Society. 35: 1234. Bibcode:2003AAS...203.1703M.
- ^ a b c d e f Ortiz, Mauricio; et al. (October 2016), "Precise radial velocities of giant stars. IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a 13.6 au eccentric binary system", Astronomy & Astrophysics, 595: 14, arXiv:1608.00963, Bibcode:2016A&A...595A..55O, doi:10.1051/0004-6361/201628791, S2CID 26289447, A55.
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