| Discovery | |
|---|---|
| Discovered by | Butler et al. |
| Discovery site |  California |
| Discovery date | July 15, 2006 |
| Detection method | Radial velocity |
| Orbital characteristics | |
| Semi-major axis | 3.395+0.141 −0.157 AU |
| Eccentricity | 0.471±0.012 |
| Orbital period (sidereal) | 6.214+0.015 −0.016 yr |
| Inclination | 16.639°+10.121° −2.959° |
| Longitude of ascending node | 299.391°+8.486° −8.219° |
| Time of periastron | 2450057.763+16.562 −18.431 |
| Argument of periastron | 185.689°+1.688° −1.596° |
| Semi-amplitude | 54.441+1.035 −1.167 m/s |
| Star | HD 66428 |
| Physical characteristics | |
| Mass | 10.946+2.442 −3.845 MJ |
HD 66428 b is a long-period jovian exoplanet located approximately 174 light-years away in the constellation of Monoceros. It has a minimum mass of 2.82 MJ and takes 1973 days or 5.402 years to orbit around its solar-type star HD 66428. The average distance is 3.18 AU, about half the distance between Mars and Jupiter. This planet is a so-called eccentric Jupiter with an orbital eccentricity of 0.465. At periastron, the distance is 1.70 AU and at apastron, the distance is 4.66 AU. In 2022, the inclination and true mass of HD 66428 b were measured via astrometry.
See also
References
- ^ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.
- ^ Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
External links
- "Notes for planet HD 66428 b". Extrasolar Planets Encyclopaedia. Retrieved 2008-08-20.
- "HD 66428". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-20.
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