The official proper name of exoplanet Iota Draconis b is Hypatia. The International Astronomical Union approved the name in December 2015 through its NameExoWorlds public naming process.
The winning proposal came from Hypatia, a student society in the Physics Faculty of the Universidad Complutense de Madrid in Spain. It honors Hypatia of Alexandria, the famous Greek astronomer, mathematician, and philosopher. The formal designation Iota Draconis b remains valid; Hypatia is its approved proper name, much as a named star can retain a catalog designation alongside its traditional name.
Hypatia orbits Iota Draconis, also known as Edasich, a giant star in the constellation Draco. The planet was discovered in 2002 using radial-velocity measurements, which detect the star’s motion caused by the planet’s gravitational pull. Its orbit is notably eccentric, with a period of about 511 days and an average distance of roughly 1.275 astronomical units.
A common confusion is mixing the planet’s name with names from other NameExoWorlds choices. Ditsò, Dagon, and Enaiposha refer to other approved exoplanet or star naming outcomes, not to Iota Draconis b.