Dwarf planet Ceres
- August 18, 2020
- Posted by: OptimizeIAS Team
- Category: DPN Topics
Subject: Science and tech
Researchers have shed new light on the dwarf planet Ceres which now has the status of an “ocean world”, after scientistsanalysed data collected by NASA’s Dawn spacecraft.
- There are officially five dwarf planets in our Solar System.
- The most famous is Pluto, downgraded from the status of a planet in 2006.
- The other four, in order of size, are Eris, Makemake, Haumea and Ceres. The sixth claimant for a dwarf planet is Hygiea, which so far has been taken to be an asteroid.
- Four criteria set by the International Astronomical Union (IAU) for a celestial body to be called a dwarf planet.
- The body orbits around the Sun, it is not a moon, has not cleared the neighborhood around its orbit (which means it is not the dominant body in its orbit around the Sun and this is what differentiates a planet from a dwarf planet) and has enough mass for its gravity to pull it into a roughly spherical shape.