Characteristics
HD 205739 b is a Jupiter-size planet. The estimated minimum mass is 1.37 times the mass of Jupiter. The planet has been found to orbit its host star every 279.8 days at a distance of 0.896 AU, which is approximately 89.6% of the mean distance between the Sun and the Earth. HD 205739 b has a mildly elliptical orbit, given its orbital eccentricity of 0.27. The planet's elliptical orbit is typical with respect to discovered planets whose orbits are longer than twenty days and have not grown circular because of tidal forces. According to its discoverers, HD 205739 b's elongated orbit causes its surface temperature to fluctuate by up to 100 K.
Read more about this topic: HD 205739 B