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Uranus, the seventh planet of the Solar System, has 28 confirmed moons. The 27 with names are named after characters that appear in, or are mentioned in, William Shakespeare's plays and Alexander Pope's poem The Rape of the Lock. [1] Uranus's moons are divided into three groups: thirteen inner moons, five major moons, and ten irregular moons.
The moons of the trans-Neptunian objects (other than Charon) have not been included, because they appear to follow the normal situation for TNOs rather than the moons of Saturn and Uranus, and become solid at a larger size (900–1000 km diameter, rather than 400 km as for the moons of Saturn and Uranus).
Of the Solar System's eight planets and its nine most likely dwarf planets, six planets and seven dwarf planets are known to be orbited by at least 300 natural satellites, or moons. At least 19 of them are large enough to be gravitationally rounded; of these, all are covered by a crust of ice except for Earth's Moon and Jupiter's Io . [ 1 ]
Astronomers have discovered three previously unknown moons around Uranus and Neptune, the most distant planets in our solar system. ... measuring 5 miles (8 kilometers) across. The moon, called S ...
[f] Six planets, seven dwarf planets, and other bodies have orbiting natural satellites, which are commonly called 'moons'. The Solar System is constantly flooded by the Sun's charged particles, the solar wind, forming the heliosphere. Around 75–90 astronomical units from the Sun, [g] the solar wind is halted, resulting in the heliopause.
Moons of Uranus: Originally presented as satellite planets orbiting the planet Uranus. [15] Planetary status later rescinded, leaving them only as satellites. Oberon: 1787 1700s Ceres: 1801 1867 Asteroid and dwarf planet: The first asteroids to be discovered were accepted as planets in the Copernican system, since they directly orbited the Sun.
Explore Our Solar System's Most Mysterious Moons Popular Mechanics; NASA, Getty Images Around 4.5 billion years ago, our solar system emerged from a violent cloud of gas and dust.
Once every 42 years, when Uranus has an equinox and its equatorial plane intersects the Earth, mutual occultations of Uranus's moons become possible. A number of such events occurred in 2007–2008, including an occultation of Ariel by Umbriel on 19 August 2007. [25] Currently Ariel is not involved in any orbital resonance with other Uranian ...