List of asteroid close approaches to Earth in 2014
Below is the list of asteroid close approaches to Earth in 2014. Timeline of known close approaches less than one lunar distance from Earth in 2014. A list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2014. For reference, the radius of Earth is approximately or 0.0166 Lunar distances. The orbit of geosynchronous satellites, however, is or 0.110 Lunar distances. This year, 3 asteroids were detected which traveled nearer than this, most notably 2014 AA, which impacted. This list  does not include any of the other 32 objects that collided with earth in 2014, none of which were discovered in advance, but were recorded by sensors designed to detect detonation of nuclear devices (of the 33 objects detected 5 had an impact energy greater than that of a 1 kiloton device). Warning Times by Size. This sub-section visualises the warning times of the close approaches listed in the above table, depending on the size of the asteroid. The sizes of the charts show the relative sizes of the asteroids to scale. For comparison, the approximate size of a  person is also shown. This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness. Abs Magnitude 30 and greater Abs Magnitude 29-30 Absolute Magnitude 28-29 Absolute Magnitude 27-28 Absolute Magnitude 26-27 Absolute Magnitude 25-26 Timeline of close approaches less than one Lunar distance from the Moon in 2014. The number of asteroids listed here are significantly less than those of asteroids approaching Earth for several reasons: These factors combined severely limit the amount of Moon-approaching asteroids, to a level many times lower than the detected asteroids to  pass just as close to Earth instead. Additional examples. An example list of near-Earth asteroids that passed more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2014.