This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness.Ģ015 TB 145 was radar imaged in late October 2015Īn example list of near-Earth asteroids that passed more than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2015. For comparison, the approximate size of a person is also shown. The sizes of the charts show the relative sizes of the asteroids to scale. This sub-section visualises the warning times of the close approaches listed in the above table, depending on the size of the asteroid. Objects successfully cataloged on a previous orbit, rather than being detected during final approach) Date of Rows highlighted blue indicate objects discovered more than one year before closest approach (i.e.
Rows highlighted turquoise indicate objects discovered more than 7 weeks before closest approach Rows highlighted green indicate objects discovered more than one week before closest approach Rows highlighted yellow indicate objects discovered less than 24 hours before closest approach Rows highlighted red indicate objects which were not discovered until after closest approach Note this data does not include any of the 43 objects that collided with earth in 2015, none of which were discovered in advance, but were recorded by sensors designed to detect detonation of nuclear devices (of the 43 objects detected, 2 had an impact energy greater than that of a 1 kiloton device). Timeline of known close approaches less than one lunar distance from Earth in 2015 Ī list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00256 AU) from Earth in 2015.
3 Timeline of close approaches less than one Lunar distance from the Moon in 2015.1 Timeline of known close approaches less than one lunar distance from Earth in 2015.
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