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Small asteroid 2014 AA hits the Earth's atmosphere

2 Jan 2014, 17:36 UTC
Small asteroid 2014 AA hits the Earth's atmosphere
(200 words excerpt, click title or image to see full post)

M.P.E.C. 2014-A02 issued on 2014 Jan. 2 at 13:08 UT reports the discovery of the asteroid 2014 AA (discovery magnitude 19.1) by Mt. Lemmon Survey (MPC code G96 ) on images taken on January 1.2 with a 1.5-m reflector + CCD. 2014 AA had an estimated size of 1.7 m - 3.8 m (based on the object's absolute magnitude H=30.9). As reported on this MPEC:It is virtually certain that 2014 AA hit the Earth's atmosphere on 2014 Jan. 2.2 +/- 0.4, as demonstrated by independent calculations by Bill Gray, the MPC and Steve Chesley (JPL). According to Chesley, the impact locations are widely distributed, most likely falling on an arc extending from Central America to East Africa, with a best-fit location just off the coast of West Africa on Jan. 2.10. 2014 AA was unlikely to have survived atmospheric entry intact, as it was comparable in size to 2008 TC3, the only other example of an impacting object observed prior to atmospheric entry.Below you can see the two maps of the possible impact region made by Bill Gray. (click on the images for a bigger version)These mpas are based on half-arcsecond Monte Carlo noise. The corresponding impact times and locations ...

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