Moons of Uranus these five, Titania, is 1,578 km in diameter and the eighth-largest moon in the Solar System, and about one-twentieth the mass the Earth's Moon. The orbits of the regular moons are nearly coplanar with Uranus's equator, which is tilted 97.77° to its orbit. Uranus's irregular moons have elliptical and strongly inclined (mostly retrograde) orbits at large distances from the planet. William Herschel discovered the first two moons, Titania and Oberon, in 1787, and the other three ellipsoidal moons were discovered in 1851 by William Lassell (Ariel and Umbriel) and in 1948 by Gerard Kuiper (Miranda). These five have planetary mass,
Oberon (operating system) successful installation of Oberon System 3 to André Fischers Oberon System 3 Tutorial. An expanded version of this tutorial was published as a book, which it is out of print now. The whole book is available in electronic form under a single user license in every installed version of System 3 (Windows, Linux or Native, i.e. also with the Gadgets toolkit of OLR). More information how to get your own copy of the Oberon Companion may be found in the section of the Oberon Wikibook. Similar user Interfaces have yet to appear in more commonplace operating systems. Rob Pike's Acme