ES-03-0025

A warm transiting exoplanet pair around a Sun-like star

Jan Eberhardt, Trifon Trifonov, Thomas Henning, Rafael Brahm, Melissa Hobson, Nestor Espinoza, Andres Jordan, Diana Kossakowski, Felipe I Rojas, Martin Schlecker, Marcelo Tala, TESS team

We present the discovery and orbital characterization of a pair of warm massive exoplanets orbiting the Sun-like star TIC118339710. These planets were detected by rhe Transiting Exoplanet Satellite (TESS) mission as two single-transit events, one for each planet. We validated our findings through the Warm gIaNts with tEss (WINE) survey, which systematically characterizes warm massive exoplanets with orbital periods between 10 and 300 days identified from TESS photometric data. We conducted a radial velocity follow-up using HARPS, FEROS, and CHIRON, which reveals that the inner planet has a mass of 0.20 Mjup, similar to Saturn, and an orbital period of about 80 days. The second companion is consistent with a Jovian exoplanet with a mass of 1.18 Mjup, and an orbital period of about 230 days. This system provides new insights into the properties of warm massive planets, expanding our knowledge of planetary formation and evolution.