Megaclite (// meg-ə-KLY-tee; Latin: Megaclītē; Greek: Μεγακλειτή), also known as Jupiter XIX, is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 8.
Megaclite is about 5.4 kilometres in diameter, and orbits Jupiter at an average distance of 24.687 million kilometers in 792.437 days, at an inclination of 150° to the ecliptic (148° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.308.
- IAUC 7555: Satellites of Jupiter Archived 2002-09-16 at the Wayback Machine 2001 January 5 (discovery)
- MPEC 2001-A29: S/2000 J 7, S/2000 J 8, S/2000 J 9, S/2000 J 10, S/2000 J 11 2001 January 15 (discovery and ephemeris)
- MPEC 2001-T59: S/2000 J 8, S/2000 J 9, S/2000 J 10 2001 October 15 (revised ephemeris)
- IAUC 7998: Satellites of Jupiter[permanent dead link] 2002 October 22 (naming the moon "Magaclite")
- IAUC 8023: Satellites of Jupiter[permanent dead link] 2002 November 29 (correcting the name)