Which is the largest asteroid?

1 Ceres – The largest and first discovered asteroid, by G. Piazzi on January 1, 1801. Ceres comprises over one-third the 2.3 x 1021 kg estimated total mass of all the asteroids.1 Ceres – The largest and first discovered asteroid, by G. Piazzi on January 1, 1801. Ceres comprises over one-third the 2.3 x 1021 kg estimated total mass of all the asteroids.

What is the largest asteroid near Earth?

A large asteroid is expected to pass within 1.93 million kilometers of Earth on Tuesday, according to NASA. The asteroid known as 7482 (1994 PC1), which was discovered in 1994, is about one kilometer wide or “bridge size” as NASA called it.

What are the 3 biggest asteroids?

Ceres, Pallas, and Vesta are the three largest asteroids. Even though they are much smaller than the planets (Ceres, the largest asteroid, has only 1% the mass of the Moon), they are still capable of causing changes in the orbits of Mars and the Earth.

What is the second largest asteroid?

Vesta Vesta is thought to be the second-largest asteroid, both by mass and by volume, after the dwarf planet Ceres, though in volume it overlaps with the uncertainty in the measurements of 2 Pallas.

Will asteroid Eros hit Earth?

Some bad news from European mathematicians: there seems to be a significant chance that within the next 1.14 million years, an asteroid named 433 Eros could hit Earth, with dire results for the human race and most other species. Little 433 Eros is not on most lists of potential planetary catastrophes.

At what time is the asteroid going to pass Earth?

The asteroid is expected to be at its nearest to our planet at 4.51 p.m. ET. It won't be the largest asteroid ever to sweep past Earth.

What is the smallest known asteroid?

2015 TC25 2015 TC25, which rotates once every 133 seconds, is only about 6 feet (2 meters) in diameter, making it the smallest asteroid ever mineralogically characterized with a ground-based telescope.

What are the 5 largest asteroids in the asteroid belt?

The Asteroid Belt

  • 1 Ceres. Giuseppe Piazzi discovered 1 Ceres in 1801, and at first it was considered to be the eighth planet; Neptune and Pluto had not been discovered. …
  • 4 Vesta. …
  • 2 Pallas. …
  • 10 Hygiea. …
  • 704 Interamnia. …
  • 52 Europa. …
  • 511 Davida. …
  • 87 Sylvia.

How big was the asteroid that killed the dinosaurs?

The asteroid was about 7.5 miles (12 kilometers) in diameter and was traveling about 27,000 mph (43,000 km/h) when it created a 124-mile-wide (200 km) scar on the planet's surface, said Sean Gulick, a research professor at the University of Texas Institute for Geophysics, who led the study.