Herse (moon)
Template:Short description Template:Infobox planet
Herse Template:IPAc-en, or Jupiter L, previously known by its provisional designation of Template:Nowrap, is a natural satellite of Jupiter. It was discovered on 8 February 2003 by the astronomers Brett J. Gladman, John J. Kavelaars, Jean-Marc Petit, and Lynne Allen and also by a team of astronomers at the University of Hawaii.<ref>Daniel W. E. Green, IAUC 8116: Satellites of Jupiter and Saturn 2003 April 11 (discovery)</ref><ref>Brian G. Marsden, MPEC 2003-G19: S/2003 J 17 2003 April 3 (discovery and ephemeris)</ref> It was named after Herse 'dew', by some accounts a daughter of Zeus and Selene the moon in Greek mythology,<ref>Keightley, p. 55; Hard, p. 46; Alcman, Fragment 57.</ref> on 11 November 2009.<ref>Jennifer S. Blue, L Named Herse Template:Webarchive, 2009 November 9</ref><ref>Jennifer S. Blue, IAUC 9094: Satellite of Jupiter (subscription required) 2009 November 11 (naming)</ref> Ersa (Jupiter LXXI) is also named for the same mythological figure.
Herse is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 22,134,000 km in 672.752 days, at a mean inclination of 165° to the ecliptic, in a retrograde direction and with a mean eccentricity of 0.2493.<ref>Planetary Satellite Mean Orbital Parameters, JPL</ref>
It is a member of the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.