“As of March 2019, we knew of more than 600,000 asteroids in our Solar System.
“Of these, around 20,000 are near-Earth objects, 800 of which are in ESA’s risk list, meaning that they merit close follow-up observations.”
Asteroid 2019 UH7
The first asteroid that will approach Earth on Wednesday is the Asteroid 2019 UH7.
First observations of the space rock were made on October 25.
NASA has since designated UH7 an Apollo-type asteroid.
Apollo-type rocks fly on trajectories similar to Asteroid 1862 Apollo.