Two asteroids are expected to pass within 154,000 miles of Earth on Wednesday -- closer than the distance between the Earth and the moon, NASA announced.

Neither will hit the planet, NASA was quick to add.

Asteroid 2010 RX30 is estimated to be approximately 32 to 65 feet in size and will pass within approximately 154,000 miles of Earth at 5:51 a.m. ET Wednesday. The second object, 2010 RF12, estimated to be 20 to 46 feet in size, will pass within approximately 49,000 miles at 5:12 p.m. ET.

NASA said the Catalina Sky Survey near Tucson, Ariz., discovered both objects on Sunday. The Minor Planet Center in Cambridge, Mass., reviewed the observations and determined the preliminary orbits. The center's personnel concluded both objects would pass within the distance of the moon to Earth, approximately 240,000 miles.

The asteroids should be visible with moderate-sized amateur telescopes.

By Mara Bellaby, FLORIDA TODAY