|Discovered by||William Herschel|
|Discovered in||January 11, 1787|
|Semi-major axis||435,910 km|
|Mean radius||436,300 km|
|Orbital period||8.706 d|
|Inclination||0.340° (to Uranus' equator)|
|Is a moon of||Uranus|
|Mean diameter||1577.8 km
|Surface area||7,820,000 km²|
|Mean density||1.72 g/cm³|
|Surface gravity||0.378 m/s2 (~0.039 g)|
|Escape velocity||0.77 km/s|
Discovery[change | change source]
Name and pronunciation[change | change source]
The names of Titania and the other four moons of Uranus then known were suggested by Herschel's son John Herschel in 1852 at the request of William Lassell. Lassell had found Ariel and Umbriel the year before. He had supported Herschel's 1847 naming scheme for the seven then-known moons of Saturn and had named his newly-found eighth moon Hyperion in 1848, in accordance with Herschel's naming scheme.
All of the moons of Uranus are named for characters from Shakespeare or Alexander Pope. Titania was named after Titania, the Queen of the Faeries in A Midsummer Night's Dream. It is also designated Uranus III.
Physical characteristics[change | change source]
So far the only close-up images of Titania are from the Voyager 2 probe, which photographed the moon during its Uranus flyby in January, 1986. At the time of the flyby the southern hemisphere of the moon was pointed towards the Sun so only it was studied.
Surface features[change | change source]
Surface features on Titania are named for characters from plays by William Shakespeare. Chasms on Titania are called chasmata. Escarpments here are called rupes. They are named after the places where plays by Shakespeare happen. craters on Titania are named after female characters in the plays.
|Feature||Named after||Type||Length (diameter), km||Coordinates|
|Belmont Chasma||Belmont, Italy (The Merchant of Venice)||Chasma||238|
|Messina Chasmata||Messina, Italy (Much Ado About Nothing)||1,492|
|Rousillon Rupes||Roussillon, France (All's Well That Ends Well)||Rupes||402|
|Adriana||Adriana (The Comedy of Errors)||Crater||50|
|Bona||Bona (Henry VI, Part 3)||51|
|Calphurnia||Calpurnia Pisonis (Julius Caesar)||100|
|Elinor||Eleanor of Aquitaine (The Life and Death of King John)||74|
|Iras||Iras (Antony and Cleopatra)||33|
|Jessica||Jessica (The Merchant of Venice)||64|
|Katherine||Katherine (Henry VIII)||75|
|Lucetta||Lucetta (The Two Gentlemen of Verona)||58|
|Marina||Marina (Pericles, Prince of Tyre)||40|
|Mopsa||Mopsa (The Winter's Tale)||101|
|Phrynia||Phrynia (Timon of Athens)||35|
|Ursula||Ursula (Much Ado About Nothing)||135|
Occultation[change | change source]
On September 8, 2001, Titania occulted a faint star; this was a chance to both refine its diameter and ephemeris, and to detect any extant atmosphere. The data revealed no atmosphere to a surface pressure of 0.03 microbars; if it exists, it would have to be far thinner than that of Triton or Pluto.
Other websites[change | change source]
Notes[change | change source]
- Herschel, William. 1787. An account of the discovery of two satellites revolving round the Georgian planet. Philosophical Transactions of the Royal Society of London, Vol. 77, pp. 125-129; and "On George's Planet and its satellites", Philosophical Transactions of the Royal Society of London, Vol. 78, pp. 364-378, 1788.
- Herschel, William. 1798. On the discovery of four additional satellites of the Georgium Sidus; The retrograde motion of its old satellites announced; and the cause of their disappearance at certain distances from the planet explained: Philosophical Transactions of the Royal Society of London 1798. 88: 47-79.
- http://adsabs.harvard.edu//full/seri/AN.../0034//0000169.000.html Adsabs.harvard.edu Retrieved on 05-19-07
- Strobell, M.E.; Masursky, H. (1987). "New Features Named on the Moon and Uranian Satellites". Abstracts of the Lunar and Planetary Science Conference. 18: 964–65. Bibcode:1987LPI....18..964S.
- USGS/IAU. "Titania Nomenclature Table Of Contents". Gazetteer of Planetary Nomenclature. USGS Astrogeology. Retrieved 2012-02-23.
- http://www.obspm.fr/actual/nouvelle/mar02/titania.en.shtml Archived 2013-03-07 at the Wayback Machine Obspm.fr Retrieved on 05-19-07
- http://www.lesia.obspm.fr/~titania/results.html Lesia.obspm.fr Retrieved on 05-19-07