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) and Paul Reed completed a re-implementation of the original Oberon System for the Digilent Xilinx Spartan 3 FPGA Starter Board. The work included a revision of "Project Oberon", identified as Project Oberon (New Edition 2013). The system has since been ported to a Xilinx Spartan 6 FPGA Development Board by Saanlima Electronics. In 2015 Paul Reed collaborated with Victor Yurkovsky in the creation of OberonStation, a Xilinx Spartan 3-based computer designed specifically to run Oberon. A2, Yet another name for the Active Object System, 2003.<br> ALO, ARM Linux Oberon; in LNO family and for ARM CPU.<br> AOS, Active Object System,