 The planet's orbit and comparison to Jupiter | |
| Discovery[1] | |
|---|---|
| Discovered by | Blunt et al. |
| Discovery date | 2019 |
| Radial velocity | |
| Orbital characteristics[2] | |
| Periastron | 2.87±0.08 AU |
| Apoastron | 41.8+22.1 −10.6 AU |
| 22.3+11.0 −5.3 AU | |
| Eccentricity | 0.87±0.04 |
| 102+84 −34 yr | |
| Inclination | 89.9+13.3 −13.5 |
| 224.0+18.2 −20.3 | |
| 2458122±12 | |
| 339.9±1.8 | |
| Semi-amplitude | 38.4±0.6 |
| Star | HR 5183 |
| Physical characteristics[2] | |
| Mass | 3.31+0.18 −0.14 MJ |
HR 5183 b is anexoplanet located 102.7light years away in theconstellation ofVirgo orbiting the star HR 5183. It has a mass of3.31 MJ.[2] It has a highlyeccentric (e≃0.87) orbit which takes it from within the orbit ofJupiter to beyond the orbit ofNeptune (2.87 to 41.8 AU) which classifies it as aneccentric Jupiter and it has been nicknamed the "whiplash planet".[3][1] It was discovered in 2019 based on two decades ofradial velocity observations.[1]
In 2021,astrometric observations revealed that HR 5183 b has a nearly edge-onorbital inclination, and thus its true mass is close to itsminimum mass.[2]
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