HD 66428 b
| Discovery | |
|---|---|
| Discovered by | Butler et al.[1] |
| Discovery site |  California |
| Discovery date | July 15, 2006 |
| Radial velocity | |
| Orbital characteristics[2] | |
| 3.395+0.141 −0.157 AU | |
| Eccentricity | 0.471±0.012 |
| 6.214+0.015 −0.016 yr | |
| Inclination | 16.639°+10.121° −2.959° |
| 299.391°+8.486° −8.219° | |
| 2450057.763+16.562 −18.431 | |
| 185.689°+1.688° −1.596° | |
| Semi-amplitude | 54.441+1.035 −1.167 m/s |
| Star | HD 66428 |
| Physical characteristics[2] | |
| 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.[1] In 2022, the inclination and true mass of HD 66428 b were measured via astrometry.[2]
See also
[edit]References
[edit]- ^ a b 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.
- ^ a b c 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
[edit]- "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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