Nyamnien lies in northern Centaurus, near that constellation's border with Hydra. It is notable for possessing a single low-density planet, a gas giant named Asye, which orbits the star so closely that its atmosphere has expanded to a diameter considerably greater than that of Jupiter.
This planet, named Asye, orbits Nyamien at a distance of just 0.05 AU (approximately 7.5 million kilometres, or about an eighth of the distance of Mercury from the Sun). Asye is a curious planet, much larger than Jupiter, but also considerably less dense. It thus belongs to the class of 'puffy' gas giants sometimes described as 'hot Saturns', existing in conditions of such intense heat that their atmospheres have inflated and expanded around the planet.
Nyamien and its planet Asye gained their names a part of the NameExoWorlds project, as part of which their names were assigned by the country of Côte d'Ivoire. The star and its planet take their names from deities of the Akan tradition of West Africa.