A small asteroid passed within the moon's distance from the Earth on Wednesday morning, and another will do likewise later in the day, space watchers say.
The objects don't pose a threat to Earth, and they will not be visible to the naked eye, said Donald Yeomans, manager of NASA's Near Earth Program, which tracks potentially hazardous asteroids and comets within 28 million miles of Earth.
Near-Earth asteroid 2010 RX30, which is estimated to be 32 to 65 feet in diameter, passed within 154,000 miles of Earth at 5:51 a.m. ET Wednesday, the website PopFi.com confirmed.
The second object, 2010 RF12, estimated to be 20 to 46 feet in diameter, will pass within 49,088 miles of Earth at 5:12 pm ET.
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