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This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following ...
The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across and larger than meteoroids, to Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an asteroid, if it shows a coma (tail) when warmed by solar radiation, although recent observations suggest a continuum ...
Barring detailed mass determinations, [4] the mass can be estimated from the diameter and assumed density values worked out as below. = Besides these estimations, masses can be obtained for the larger asteroids by solving for the perturbations they cause in each other's orbits, [5] or when the asteroid has an orbiting companion of known orbital radius.
The average distance from the surface of the planet to its satellite is 239,000 miles although the exact length varies at different points in the moon's orbit. ... That's about the size of a ...
Nonetheless, hundreds of thousands of asteroids are currently known, and the total number ranges in the millions or more, depending on the lower size cutoff. Over 200 asteroids are known to be larger than 100 km, [63] and a survey in the infrared wavelengths has shown that the asteroid belt has between 700,000 and 1.7 million asteroids with a ...
The mass of 2 Pallas (blue) compared to other large asteroids: 4 Vesta, 10 Hygiea, 704 Interamnia, 15 Eunomia, the remainder of the asteroid belt, and 1 Ceres. The unit of mass is × 10 18 kg. Both Vesta and Pallas have assumed the title of second-largest asteroid from time to time. [ 47 ]
The sizes of the charts show the relative sizes of the asteroids to scale. For comparison, the approximate size of a person is also shown. This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness. Abs Magnitude 30 and greater. Silhouette of man standing and facing forward (size of a person for ...
The mass of 4 Vesta (blue) compared to other large asteroids: 1 Ceres, 2 Pallas, 10 Hygiea, 704 Interamnia, 15 Eunomia and the remainder of the Main Belt. The unit of mass is × 10 18 kg. Other objects in the Solar system with well-defined masses within a factor of 2 of Vesta's mass are Varda , Gǃkúnǁʼhòmdímà , and Salacia (245, 136, and ...