A 100-foot long asteroi named 2013 TX68 will whiz by our planet March 8, researchers say.

According to NASA, 2013TX68 will flyby roughly 3 million miles from the Earth. Though there is a chance it could come closer, it won’t come any nearer than 15,000 miles above our planet’s surface.

The asteroid was originally predicted to pass Earth on March 5. New projections were made after scientists at the Center for Near-Earth Object Studies (CNEOS) compared archived images to their recent observations of Asteroid 2013 TX68’s path. This allowed them to refine their earlier predictions and make more accurate calculations of the object’s distance to the Earth.

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A graphic depicting the orbit of the asteroid 2013 TX68 projected to fly by Earth on March 8. The asteroid poses no threat to Earth during this flyby or in the foreseeable future.

(NASA/JPL-Caltech )

“We already knew this asteroid, 2013 TX68, would safely fly past Earth in early March, but this additional data allows us to get a better handle on its orbital path,” said CNEOS manager Paul Chodas. “The data indicate that this small asteroid will probably pass much farther away from Earth than previously thought.”

The astronomers’ findings also allowed them to determine 2013 TX68 is unable to impact Earth over the next century.

“There is no concern whatsoever regarding this asteroid - unless you were interested in seeing it was a telescope,” said Chodas. “Prospects for observing this asteroid, which were not very good to begin with, are now even worse because the asteroid is likely to be farther away, and therefore dimmer than previously believed.”

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The orbit calculations of asteroids are updated constantly and new observations are reported to the Minor Planet Center. These lead to projections of minimum, maximum and nominal distances from Earth, which, over time, scientists use to refine and narrow orbit uncertainties.

Asteroid 2013 TX68 was discovered by the Catalina Sky-Survey on Oct. 6, 2013. According to NASA, if an asteroid of its size was to ever collide with the Earth, it could cause an air burst that has twice the amount of energy of the asteroid that destroyed parts of Chelyabinsk, Russia, three years ago.

Asteroids are described as Near-Earth Objects (NEOS) that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth’s neighborhood.

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A conceptual image of an astronaut, anchored to a foot restraint, preparing to investigate the asteroid boulder. (NASA)