| HD 38801 b | |
| Discoverer: | Harakawa et al. |
| Discovery Site: | Subaru Telescope and Keck Observatory |
| Discovered: | 2010 |
| Discovery Method: | Doppler spectroscopy |
| Star: | HD 38801 |
HD 38801 b is an extrasolar gas giant planet located in the constellation of Orion[1] whose discovery was announced in 2009 and was made using the radial velocity method.[2] The object, with a mass roughly 12 times that of Jupiter, is located 324 light years (99.4 parsecs) from Earth[3] [4] orbiting 1.65 astronomical units from its G-type star, HD 38801.[5] HD 38801 b, besides being the only planet in its system also lies within the inner habitable zone and takes around 1.9 years, or 693.5 days to complete a full orbit.
HD 38801 b is characterized by its uniquely low eccentricity values, or having a near circular orbit. As a super massive planet with an orbital period of hundreds of days, this occurrence is quite uncommon.