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First near-Earth asteroid discovered and the second largest; first asteroid to be detected by radar; first asteroid orbited and landed upon 482 Petrina: 23.3: March 3, 1902: First asteroid named after dog 490 Veritas: 115: September 3, 1902: Created in one of the largest asteroid-on-asteroid collisions of the past 100 million years 588 Achilles ...
The largest of these may have a hydrostatic-equilibrium shape, but most are irregular. Most of the trans-Neptunian objects (TNOs) listed with a radius smaller than 200 km have " assumed sizes based on a generic albedo of 0.09" since they are too far away to directly measure their sizes with existing instruments.
10 Hygiea is a major asteroid located in the main asteroid belt.With a mean diameter of between 425 and 440 km and a mass estimated to be 3% of the total mass of the belt, [11] it is the fourth-largest asteroid in the Solar System by both volume and mass, and is the largest of the C-type asteroids (dark asteroids with a carbonaceous surface) in classifications that use G type for 1 Ceres.
Vesta is thought to be the second-largest asteroid, both by mass and by volume, after the dwarf planet Ceres. [20] [21] [22] Measurements give it a nominal volume only slightly larger than that of Pallas (about 5% greater), but it is 25% to 30% more massive. It constitutes an estimated 9% of the mass of the asteroid belt. [23]
To help try to put that into perspective, here are 10 of the biggest things of the universe in order of smallest to largest: 10. Ceres -- The biggest asteroid ever discovered by humans was found ...
The news about the discovery of the world’s largest asteroid impact crater is huge, if true—323-miles-in-diameter huge.. Researchers at University New South Wales (UNSW) believe they’ve ...
Ceres is the largest asteroid in the main asteroid belt. [16] It has been classified as a C‑type or carbonaceous asteroid [16] and, due to the presence of clay minerals, as a G-type asteroid. [60] It has a similar, but not identical, composition to that of carbonaceous chondrite meteorites. [61]
The asteroid 2024 YR4 is now rated at Level 3 out of 10 on the Torino Impact Hazard ... A "gravity tractor," a large spacecraft that slowly tugs the asteroid away using its own gravitational pull ...