What asteroid is believed to be coming very close to Earths orbit sometime in the near future?

It is possible but we call those rocks moons.

Numerous asteroids are in constant motion around the earth, infinitely tracing their orbits. Occasionally some will collide or break down and fall as bits of meteor to Earth.

All the time, actually over 1,000 asteroids hit the Earth everyday and are hitting it sometimes every second and every minute. In fact, two asteroids came near the Earth just today, September 8,...

Yes, many are, we just dont know for sure when they will hit us.

If they crash into Earth, an enormous amount of energy can be released, since they move very fast.