Newly Discovered 'Warm Jupiter' Orbits Eccentrically and Misaligned.

Astronomers have discovered a new "warm Jupiter" exoplanet, TOI-1859 b, using NASA's Transiting Exoplanet Survey Satellite (TESS). The planet orbits its parent star on an eccentric and misaligned orbit. The planet has a radius of about 0.86 Jupiter radii and orbits its host every 63.48 days, at a distance of some 0.33 AU from it. The observations found that the sky-projected stellar obliquity for TOI-1859 b is at a level of 38.9 degrees and the orbital eccentricity turned out to be about 0.57. The astronomers suppose that such an eccentric and misaligned orbit of TOI-1859 b is likely due to dynamical interactions, like planet-planet scattering and planet-disk resonance crossing.