Titania
Moon· orbits Uranus
Titania is the largest moon of Uranus — an icy, cratered world cut by enormous canyons (Messina Chasmata) that stretch over 1,500 km.
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Key facts
Mass
3.40 × 10²¹ kg
0.0463 Moon masses
Radius
789 km
45% of our Moon's radius
Surface gravity
0.365 m/s²
4% of Earth's
Day length
8.7 days
Orbit around Uranus
8.71 Earth days
Science
Physical
- Mass
- 3.40 × 10²¹ kg · 0.0463 Moon masses
- Radius
- 789 km · 45% of our Moon's radius
- Density
- 1,653 kg/m³ · 1.7× water
- Surface gravity
- 0.365 m/s² · 4% of Earth's
- Escape velocity
- 758 m/s · 7% of Earth's
Orbit around Uranus
- Distance from Uranus
- 267,226 km
- Orbital period
- 8.7 days
- Eccentricity
- 0.002
- Inclination
- 0.10 °
Rotation
- Rotation period
- 8.7 days
- Tidal locking
- Tidally locked to its parent
Temperature
- Mean
- 70 K (-203 °C)
Composition
- Bulk composition
- About equal parts water ice and rock, with carbon-dioxide ice; possibly a thin subsurface ocean.
Radiation & temperature
- Insolation
- 0.00264 S⊕ · 1/378 of the sunlight Earth receives
- Bond albedo
- 0.17 · reflects 17% of incoming sunlight
- Equilibrium temperature
- 60 K (-213 °C)
- Measured mean temperature
- 70 K (-203 °C)
- Greenhouse warming
- +10 K
Discovery & history
- Discovered
- January 11, 1787
- By
- William Herschel
- Method
- Visual discovery (telescopic)
- Name
- Titania, queen of the fairies in Shakespeare's 'A Midsummer Night's Dream'.
Herschel discovered Titania, the largest moon of Uranus, in 1787 — six years after he found Uranus itself. Voyager 2's 1986 flyby revealed enormous fault valleys, including Messina Chasmata, stretching some 1,500 km across its icy face.
Images
Images from open archives · credit shown per image