&sq=&lang=&file=File:Titania_(moon)_color,_cropped.jpg) Titania, as imaged by Voyager 2, January 1986. Along the terminator are visible the moon's largest known impact crater, Gertrude, at upper right and several enormous canyon-like grabens at lower right. | |||||||||
| Discovery | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered by | William Herschel | ||||||||
| Discovery date | January 11, 1787[1] | ||||||||
| Designations | |||||||||
Designation | Uranus III | ||||||||
| Pronunciation | /təˈtɑːniə, təˈteɪniə/[2] | ||||||||
| Adjectives | Titanian /təˈtɑːniən/[3][a] | ||||||||
| Orbital characteristics | |||||||||
| 435910 km[4] | |||||||||
| Eccentricity | 0.0011[4] | ||||||||
| 8.706234 d[4] | |||||||||
Average orbital speed | 3.64 km/s[b] | ||||||||
| Inclination | 0.340° (to Uranus's equator)[4] | ||||||||
| Satellite of | Uranus | ||||||||
| Physical characteristics | |||||||||
| 788.4±0.6 km (0.1235 Earths)[5] | |||||||||
| 7820000 km2[c] | |||||||||
| Volume | 2054000000 km3[d] | ||||||||
| Mass | (3.4550±0.0509)×1021 kg[7] | ||||||||
Mean density | 1.683 g/cm3 (calculated) | ||||||||
| 0.371 m/s²[e] | |||||||||
| 0.765 km/s[f] | |||||||||
| presumed synchronous[8] | |||||||||
| Albedo |
| ||||||||
| |||||||||
| 13.9[10] | |||||||||
| Atmosphere | |||||||||
Surface pressure | <1–2 mPa (10–20 nbar) | ||||||||
| Composition by volume |
| ||||||||
Titania (/təˈtɑːniə, təˈteɪniə/), also designated Uranus III, is the largest moon of Uranus. At a diameter of 1,578 kilometres (981 mi) it is the eighth largest moon in the Solar System, with a surface area comparable to that of Australia. Discovered by William Herschel in 1787, it is named after the queen of the fairies in Shakespeare's A Midsummer Night's Dream. Its orbit lies inside Uranus's magnetosphere.
Titania consists of approximately equal amounts of ice and rock, and is probably differentiated into a rocky core and an icy mantle. A layer of liquid water may be present at the core–mantle boundary. Its surface, which is relatively dark and slightly red in color, appears to have been shaped by both impacts and endogenic processes. It is covered with numerous impact craters reaching up to 326 kilometres (203 mi) in diameter, but is less heavily cratered than Oberon, outermost of the five large moons of Uranus. It may have undergone an early endogenic resurfacing event which obliterated its older, heavily cratered surface. Its surface is cut by a system of enormous canyons and scarps, the result of the expansion of its interior during the later stages of its evolution. Like all major moons of Uranus, Titania probably formed from an accretion disk which surrounded the planet just after its formation.
Infrared spectroscopy conducted from 2001 to 2005 revealed the presence of water ice as well as frozen carbon dioxide on Titania's surface, suggesting it may have a tenuous carbon dioxide atmosphere with a surface pressure of about 10 nanopascals (10−13 bar). Measurements during Titania's occultation of a star put an upper limit on the surface pressure of any possible atmosphere at 1–2 mPa (10–20 nbar). The Uranian system has been studied up close only once, by the spacecraft Voyager 2 in January 1986. It took several images of Titania, which allowed mapping of about 40% of its surface.
- ^ Cite error: The named reference
Herschel 1787was invoked but never defined (see the help page). - ^ "Titania". Lexico UK English Dictionary. Oxford University Press. Archived from the original on March 2, 2020. Lexico/OED. Only the first pronunciation is used in A Midsummer Night's Dream, e.g. Shakespeare Recording Society (1995) The Tempest (audio CD). The second is used by interviewees in a podcast by the Folger Shakespeare Library, but not by the narrator: Brave New Worlds: The Shakespearean Moons of Uranus
- ^ Lewis (2002) Anthony Burgess: A Biography, p. 387
- ^ a b c d Cite error: The named reference
orbitwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Widemann Sicardy et al. 2009was invoked but never defined (see the help page). - ^ Cite error: The named reference
French et al. 2024was invoked but never defined (see the help page). - ^ Jacobson (2023), as cited in French et al. (2024)[6]
- ^ Cite error: The named reference
Smith Soderblom et al. 1986was invoked but never defined (see the help page). - ^ Cite error: The named reference
Karkoschka, Hubble 2001was invoked but never defined (see the help page). - ^ Cite error: The named reference
Newton Teece 1995was invoked but never defined (see the help page).
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