Asteroid '1998OR2' will be the biggest asteroid to fly by Earth this year. The closest approach will be on 29 April, 2020. Asteroid '1998OR2' was founded in 1998. It has a diameter of 1.8-4.1 km. It will stay 3.9 million miles (6.3 million kilometers) away from our planet.

On 1 January, 1801, Ceres, the first asteroid was discovered.

Bode's law suggested there should be a planet between Mars and Jupiter.

Asteroids orbit the sun and are rocky, metallic bodies. From various rocks and metals, asteroids are made up of. Mainly from nickel and iron metals, asteroids are made.

Asteroids are also known as minor planets or small stars as they are very small than planets or moon.

An Italian astronomer, Giuseppe Piazzi discovered the first asteroid.

Most of the asteroids lie between Mars and Jupiter and it is known as the asteroid belt. It is divided into smaller belts and separated by distances known as Kirkwood gaps. These gaps are spaces in which the gravitational attraction of Jupiter prevents any object from maintaining an orbit.

Trojan asteroids are located at the Lagrangian points, L4 and L5 and lie in the same orbit as Jupiter.

One group of asteroids known as Apollo objects, cross the orbit of Earth. These bodies sometimes may come relatively close to Earth and some have even collided with the planet.

An asteroid in dog-bone shape is 216 Kleopatra. It is of the size of New Jersey that orbits the Sun between Mars and Jupiter.

William Hershel coined the name asteroid.