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) Linux Revival. A version of NO which uses Linux as a HAL and runs on x86, ARM, and MIPS.<br> OP2, The Portable Oberon-2 Compiler. OP2 was developed to port Oberon onto commercially available platforms.<br> PACO, (scope) PArallel COmpiler. Appears in A2. Compiles each scope in an independent thread. <br> RISC5, the CPU of Project Oberon 2013 based upon Wirth's RISC architecture. Not to be confused with RISC-V.<br> UnixAOS, Unix-based AOS.<br> WinAOS, Windows-based AOS.<br> Oberon (operating system) The Oberon System is a modular, single-user, single-process, multitasking operating system written in the programming language of the same name. It was originally developed