TOI-5624 b is the innermost and smallest exoplanet discovered in the TOI-5624 system, located approximately 331 light-years from Earth in the constellation Ursa Major. The planet was confirmed in late April 2026 using the transit method.
Characteristics Physical characteristics
The object is classified as a dense hot sub-Neptune, with a mass of and a radius of . These parameters were determined using the radial velocity method and the European CHEOPS telescope. Its average density, equal to , indicates the presence of a significant solid core surrounded by a less massive gaseous envelope.
Orbit The planet is the closest to its host star, and therefore its orbital period is Earth days, at a distance of . Due to its proximity to the star, the equilibrium temperature reaches 1136 K or 863 °C.
See also List of exoplanets discovered in 2026 Methods of detecting exoplanets
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