HR 5183 b
HR 5183 b is an exoplanet located 102.7 light years away in the constellation of Virgo orbiting the star HR 5183. It has a minimum mass of 3 Jupiter masses. It has a highly eccentric (e≃0.84) orbit which takes it from within the orbit of Jupiter to beyond the orbit of Neptune, which classifies it as an eccentric Jupiter and it has been nicknamed the "whiplash planet"[2] and "Planet Pi".[1] It was discovered in 2019 based on two decades of radial velocity observations.[1]
 Starmap showing location of 6.3 magnitude star HR 5183 in Virgo | |
| Discovery[1] | |
|---|---|
| Discovered by | Blunt et al. |
| Discovery date | 2019 |
| Radial velocity | |
| Orbital characteristics | |
| 18+6 −4 AU[1] | |
| Eccentricity | 0.84±0.04[1] |
| 75.017 ± 30.116 years[1] | |
| Physical characteristics | |
| Mass | ≥3.23±0.14 MJ[1] |
References
- Blunt, Sarah; Endl, Michael; Weiss, Lauren M.; Cochran, William D.; Howard, Andrew W.; MacQueen, Phillip J.; et al. (August 2019). "Radial Velocity Discovery of an Eccentric Jovian World Orbiting at 18 au". arXiv:1908.09925 [astro-ph.EP].
- "This weird 'whiplash' planet is unlike anything astronomers have ever seen". NBC News. Retrieved 2019-09-13.
External links
- Astronomers find bizarre planet 'unlike any other discovered so far', Cnet, AUGUST 27, 2019
- HR 5183, SIMBAD4
- Planet HR 5183 b, exoplanet.eu
- In the Presence of a Wrecking Ball: Orbital Stability in the HR 5183 System, Stephen R. Kane, Sarah Blunt, 8 Oct 2019
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