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Size comparison of Earth and Uranus. Uranus's mass is roughly 14.5 times that of Earth, making it the least massive of the giant planets. Its diameter is slightly larger than Neptune's at roughly four times that of Earth. A resulting density of 1.27 g/cm 3 makes Uranus the second least dense planet, after Saturn.
1.436 Mm – diameter of Iapetus, one of Saturn's major moons; 1.578 Mm – diameter of Titania, the largest of Uranus's moons; 1.960 Mm – estimated longest axis of Haumea; 2.326 Mm – diameter of the dwarf planet Eris, the largest trans-Neptunian object found to date; 2.376 Mm – diameter of Pluto; 2.707 Mm – diameter of Triton, largest ...
It was believed that the cutoff for round objects is somewhere between 100 km and 200 km in radius if they have a large amount of ice in their makeup; [1] however, later studies revealed that icy satellites as large as Iapetus (1,470 kilometers in diameter) are not in hydrostatic equilibrium at this time, [2] and a 2019 assessment suggests that ...
The following outline is provided as an overview of and topical guide to Uranus: . Uranus – seventh planet from the Sun.It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System.
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).
A medium grain of sand (0.5 mm diameter, 1.5 milligrams) 5 × 10 −10: Volume of a poppy seed of 1-millimetre diameter [1] 1 × 10 −9: One cubic millimetre or one microlitre: 4 × 10 −9: Volume of a mustard seed of 2-millimetre diameter 2 × 10 −8: Volume of a small grain of rice 2 mm wide by 5 mm long
The ice giants Uranus and Neptune live up to their name. Although humans have only ever sent one spacecraft (Voyager 2) toward these far-flung worlds, scientists have a pretty good idea that these ...
The mean size of the ring particles is 0.2–20.0 m, [18] and the mean separation is around 4.5 times their radius. [24] The ring is almost devoid of dust, possibly due to the aerodynamic drag from Uranus' extended atmospheric corona. [3] Due to its razor-thin nature the ε ring is invisible when viewed edge-on.