Even if the asteroid proves to be closer to 101.7ft-wide (31m), BC3 could still be an absolutely catastrophic threat if it hit Earth.
A much smaller asteroid injured more than 1,500 people and damaged more than 7,000 buildings when it struck the planet six years ago.
The so-called 2013 Chelyabinsk Meteor entered the Earth’s atmosphere undetected and at great speeds where it blew up over Russia.
The resulting arblast erupted over Chelyabinsk Oblast with 30-times the force of the Hiroshima nuclear bomb.
READ MORE: Rogue asteroids could WIPE OUT life on Earth, warns Stephen Hawking