.jpg)
Cupid
Moon· orbits Uranus
Cupid is a moon orbiting Uranus.
Open in 3D viewSee Cupid in the live, interactive 3D map
Key facts
Radius
9 km
1% of our Moon's radius
Orbit around Uranus
14.7 hours
0.61 Earth days
Science
Physical
- Radius (estimated)
- 9 km · 1% of our Moon's radius
- Sized from its brightness assuming a dark (~0.04) surface — never resolved, so the true diameter (~18 km) could be off by a factor of two.
Orbit around Uranus
- Distance from Uranus
- 74,396 km
- From JPL orbital elements
- Orbital period
- 14.71 hours
- From JPL orbital elements
- Eccentricity
- 0.007
- From JPL orbital elements
- Inclination to Uranus's Laplace plane
- 2.00 °
- From JPL orbital elements · The Laplace plane is the one a moon's orbit precesses about: close in it is the planet's equatorial plane, the plane of the rings, and further out it tilts toward the planet's own orbit.
Radiation & temperature
- Insolation
- 0.00265 S⊕ · 1/378 of the sunlight Earth receives
- Computed from the distance to the Sun (inverse-square; Earth's sunlight = 1), before any atmosphere.
Discovery & history
- By
- M.R. Showalter, J.J. Lissauer
Cupid was discovered in 2003 by M.R. Showalter and J.J. Lissauer. Uranus's moons are named after characters from the plays of Shakespeare and the poetry of Alexander Pope. Beyond its discovery and naming, little more about it has been individually recorded.
Images
Images from open archives · credit shown per image