Eupheme , also Jupiter LX, originally known as , is an outer irregular satellite of Jupiter, 2 km in diameter. It orbits Jupiter at an average distance of 20 million km, but gets as far away as 27.7 million km.
It was discovered by a team of astronomers from the University of Hawaiûi led by Scott S. Sheppard in 2003. The moon was lost following its discovery in 2003. It was recovered in 2017 and given its permanent designation that year.
It was named in 2019 after Eupheme, the ancient Greek spirit of words of good omen, praise, acclaims, shouts of triumph, and applause, the daughter of Hephaestus and Aglaea and granddaughter of Zeus. The name was suggested by Twitter user Lunartic (@iamalunartic) in a naming contest held by the Carnegie Institute on the social network who concurrently helped in naming another Jovian moon Philophrosyne. The name ends in an "e" because the orbit is retrograde.
Eupheme orbits Jupiter at an average distance of 20 million km in 588 days, at an inclination of 148ð to the ecliptic, in a retrograde direction and with an eccentricity of 0.370. It belongs to the Ananke group, retrograde irregular moons that orbit Jupiter between 19.3 and 22.7 million km, at inclinations of roughly 150ð.
Eupheme came to apojove (farthest distance from Jupiter) on 23 January 2026 when it was from Jupiter.