Impact Candidates Reported to the MEO by Independent Observers

(last updated 2/1/2021)
Lunar impact candidates residing in the list below were not confirmed by the NASA Meteoroid Environment Office at MSFC but meet one of the following criteria:

1.  The flash was confirmed by two or more independent observers.  The flash lasts any number of fields, is any brightness, and exhibits a decreasing light curve. There is no indication of flash movement.
2.  The flash lasts 3 or more fields (interlaced) or frames (progressive scan) and exhibits a decreasing light curve. The flash is obvious in all fields/frames and there is no indication of flash movement.
3.  The flash lasts 2 fields/frames.  The flash is easily identifiable (bright) in the second field/frame and there is no indication of flash movement.

Flashes only 1 field/frame in duration, unless confirmed in more than one telescope, are classified as cosmic rays.  Flash movement, from field to field, indicates a satellite in the field of view.  Decreasing light curves are indicative of the type of impact physics expected when meteoroids strike the moon.

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Detailed info about all Independently Observed Impact Candidates (PDF, <500 KB)