An asteroid described as the scale of a mountain will come inside 4.1 million miles of Earth simply after 4 p.m. EDT Thursday.[ Read more trending news ]Asteroid 2011 UL21 is among the largest area rocks – 1.1- to 2.4 miles extensive – to come back that near Earth prior to now 125 years.Learn MoreThe asteroid is bigger than 99% of recognized near-Earth asteroids, in keeping with the European Area Company (ESA), however poses no threat to Earth.Thursday afternoon the asteroid will fly previous Earth at about 58,000 mph. In keeping with Dwell Science, the asteroid is taken into account a near-Earth asteroid, that means its orbit sometimes places it inside 1.3 astronomical items (AU) of the solar — or roughly 1.3 occasions the typical distance between Earth and the solar and orbits the Earth as soon as each three years.Asteroid 2011 UL21 will transfer previous Earth at round 4.1 million miles, nearer than it’s been to our planet for a minimum of 110 years, in keeping with simulations by NASA’s Jet Propulsion Laboratory (JPL).You possibly can watch the asteroid fly by on a livestream from the Digital Telescope Mission (VTP), which can share the view of the asteroid from the Bellatrix Astronomical Observatory in Ceccano, Italy. The stream begins at 4 p.m. EDT on Thursday, with the shut method predicted to happen quarter-hour later.2011 UL21 won’t get this near Earth once more till 2089.