dwarf planet

Silvia

· 03 Mar 2021

dwarf planet

#whatis
The dwarf planet Haumea has its own ring, which probably consists of fragments of rock and ice. This is the first time a ring has been discovered on a dwarf planet.

Haumea is the most unknown among the dwarf planets in the solar system. Pluto is the best known, followed by Eris, Ceres and Makemake. “Until now, we only knew about the existence of rings around giant planets, such as Saturn and Jupiter, and with this study we have discovered that dwarf planets can also have rings.”

There are “different explanations” for the formation of the ring. “It can occur, for example, after a collision with another object, or due to the release of part of the surface material due to the rapid rotation of Haumea.” This first find of a ring around an object circling beyond Neptune shows that the presence of rings is much more common than previously assumed in planetary systems.

Haumea is a unique dwarf planet: it has the shape of a rugby ball, rotates very fast (the day lasts four hours) and consists largely of icy water. Precisely its rotational speed — faster than any other body over 100 kilometers in the entire solar system — causes the planet to deform into its elliptical shape.

Currently, this dwarf planet is located at a distance from the Earth equal to about 50 times the distance between the Earth and the Sun. Haumea has two moons, Hi'iaka and Namaka. Thanks to the recently published data, it is known that Haumea measures about 2,320 kilometers on its longest side - almost the same as Pluto - but it lacks a global atmosphere similar to that of this planet.

https://www.google.com/amp/s/amp.europapress.es/ciencia/astronomia/noticia-planeta-enano-haumea-tiene-anillo-saturno-jupiter-20171011190809.html

https://www.google.com/amp/s/www.muyinteresante.es/ciencia/articulo/el-planeta-enano-haumea-tambien-tiene-un-anillo-921507882239/amp

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dwarf planet

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