| Discovery | |
|---|---|
| Discovered by | Robinson et al. [1] | 
| Discovery site | California & Carnegie Planet Search | 
| Discovery date | January 11, 2007 | 
| Doppler spectroscopy | |
| Orbital characteristics | |
| 1.57±0.13 AU | |
| Eccentricity | 0.015±0.016 [2] | 
| 638.6±1.2 [2] d | |
| 2463066±123 [2] | |
| 86±69 [2] | |
| Semi-amplitude | 31.45±0.82 [2] | 
| Star | HD 5319 | 
HD 5319 b is a gas giant exoplanet discovered in 2007 [1] in the constellation of Cetus. This planet has a minimum mass nearly two times that of Jupiter. The planet has an almost circular orbit, with an eccentricity of only 0.02 and a period of 641 days. An additional planet in the system was discovered in 2015 and may be in a 4:3 mean motion resonance with planet b. [3]