TOI-3362b: A Proto Hot Jupiter Undergoing High-eccentricity Tidal Migration

High-eccentricity tidal migration is a possible way for giant planets to be placed in short-period orbits. If this happens often, one would expect catch proto hot Jupiters on highly elliptical orbits undergoing high-eccentricity migration. As of yet, few such systems have been discovered. Here, we introduce TOI-3362b (TIC-464300749b), an 18.1 day, 5 MJup planet orbiting main-sequence F-type star that likely The orbital eccentricity 0.815 . With semimajor axis 0.153 au, the planet's orbit expected shrink final radius 0.051 au after complete circularization. Several mechanisms could explain extreme value eccentricity, as planet–planet scattering and secular interactions. Such hypotheses can tested with follow-up observations system, e.g., measuring stellar obliquity searching companions system precise, long-term radial-velocity observations. variation equilibrium temperature it host heating at periapse make intriguing target atmospheric modeling observation. Because period days near limit TESS's sensitivity, even discoveries suggest may quite common.