About this world
TIC 172900988 b is a gas giant orbiting TIC 172900988 Aa, a yellow-white F-type star (type F9) 819 light-years from Earth. It is about 1 times the size of Jupiter and holds 3 Jupiter masses. It completes an orbit every 200 days at 0.9 AU from its star.
Its equilibrium temperature is about 361 K (88 °C): too cold for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2021 by transit with Transiting Exoplanet Survey Satellite (TESS). A planet crosses its star and dims it by a tiny, periodic fraction.