Well, as for LV-bigbollocks, that's my business...
But yes, Zeta II Reticuli is a real star -
http://en.wikipedia.org/wiki/Zeta_ReticuliAlthough exoplanet hunters have discovered hundreds of planets around other stars, I am not aware that any have been discovered around Z-2-R. This may be because this star has not searched for planets, or that planets there are small (and by small I mean Earth-sized - most easily detected exoplanets are Jupiter-sized or larger).
And Io is indeed a real moon of Jupiter.
My comment about moons orbiting near rings is based on the very real space-craft observations (Voyager, Galileo, Cassini) of moons orbiting in or near ring systems around Jupiter, Saturn, Uranus and Neptune.