Is Ceres the largest in the solar system?

This constellation knowledge gives us the size of Ceres. Ceres (1Ceres) is the first asteroid found in the asteroid belt between Mars and Jupiter. It was discovered by Italian Piazi in 180 1 year and 1 month. Then, follow Bian Xiao to understand its size!

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Ceres (1Ceres) is the first asteroid found in the asteroid belt between Mars and Jupiter. It was discovered by Piaz, an Italian, in 180 1 year 1 month 1. Its average diameter is 952 kilometers, which is equivalent to 1/4 of the moon's diameter, and its mass is about 1/50 of the moon's, also known as asteroid 1. It is the largest and heaviest object in the asteroid belt. When it was first discovered, it was listed as one of the eight planets, and it was the second star symbolizing mother besides the moon.

Ceres-physical properties Ceres mass can be measured by observing its influence on other asteroids. The results of different observers will be slightly different. The average value of the last three data in 2008 was 9.4× 1020 kg. With this mass, Ceres will account for one third of the estimated total number of asteroids in the solar system * * * 3.0 0.2× 102 1 kg, which is 4% of the mass of the moon. Its size and mass enable it to keep close to the shape of a sphere, which is similar to hydrostatic balance. In contrast, other large asteroids, such as Athena, Venus and Vesta, have irregular shapes.

The surface composition of Ceres is similar to that of type C asteroid, but there are still some differences. It can be seen from the infrared spectrum that its main substances are some hydrated minerals, indicating that there is a considerable amount of water in it. Other possible surface components include iron-rich clay and carbonate (dolomite and siderite), which are common minerals in carbonaceous chondrites. The spectral characteristics of carbonate and clay do not appear in other C-type asteroids. Ceres is sometimes classified as a G-type asteroid.

Ceres has a relatively warm surface. Its side facing the sun was estimated to be 235K (about-38 C) in the measurement of 199 1 year on May 5th.

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