The NASA -tracked asteroid will pay a visit to Earth's corner of space on April 29 this year. Astronomers have named the object Asteroid 52768 (1998 OR2) and expect it to make what the US-based space agency knows as a "close approach" of about 3.9 million miles (6.29 million km) from Earth.

According to Astrophysicist Gianluca Masi of the Virtual Telescope Project in Italy, the asteroid was about 15.5 million miles (25 million km) from Earth on March 24.

But the space rock is already visible to some telescopes, appearing as a bright dot of light against the starlit sky.

Dr Masi will track and stream online the asteroid's flyby next month - click here to learn more.

He said: "When we imaged it, Asteroid 1998 OR2 was about 25 millions of kilometres from us.

"This 1.8 to 4.1km large asteroid will come as close as 6.3 millions of kilometres from us next April 29 - more than 16 times the average lunar distance: it will not hit us - becoming bright enough to be seen with modest optical equipment."

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