Eurydome and Hermippe: discovered together

Two moons found in the same December 2001 search.

Published 2026-10-23

Eurydome was discovered concurrently with Hermippe by a University of Hawaiʻi team led by Scott Sheppard in 2001.^[1]

The date

NASA dates Eurydome’s discovery to 9 December 2001 by Sheppard, Jewitt and Kleyna at Mauna Kea.^[2]

Siblings?

Eurydome is in the Pasiphae group, thought to be pieces of one captured asteroid.^[1][2]

Less certain family ties

Confidence that all Pasiphae-group moons came from a single collision is lower than for other groups, because of differences in colour and orbit.^[2]

Numbered citations link to the sources list on the Eurydome overview page.