Hermippe is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 21.5 million kilometers in about 630 days, at aninclination of 151° to theecliptic (149° to Jupiter's equator), in aretrograde direction and with aneccentricity of 0.2290.
Hermippe belongs to theAnanke group, retrograde irregular moons which orbit Jupiter between 19,300,000kilometres (0.129astronomical units) and 22,700,000 km (0.152 AU), at inclinations of roughly 150°.
Discovery image of Hermippe andEurydome together taken in December 2001
