NASA Unsure How Close Enormous Asteroid Will Come to Earth Next Month. Asteroid 2013 TX-68 is the size of a football field. NASA has announced that a 30-metre wide asteroid passing Earth on March 5 might come so close that it'll be visible in our sky. "This asteroid’s orbit is quite uncertain, and it will be hard to predict where to look for it," said Paul Chodas, the manager of NASA's Centre for Near Earth Object Studies. "There is a chance that the asteroid will be picked up by our asteroid search telescopes when it safely flies past us next month, providing us with data to more precisely define its orbit around the Sun."
