Characteristics
HD 8574 is a large planet that orbits its host star every 227.55 days at a distance of 0.77 AU, or 77% the mean distance between the Earth and the Sun. HD 8574 b has, of the six planets announced in a November 2003 discovery paper, the shortest orbit. The planet has an estimated mass of 2.11 times Jupiter's mass. HD 8574 b has a measured orbital eccentricity of 0.288, denoting an elliptical orbit. Jupiter, in comparison, orbits the Sun with an orbital eccentricity of 0.016, which is far more circular.
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