Sunday, July 25, 2010

Lunar meteoroid impact observations and the flux of kilogram-sized meteoroids

Probable Leonid Impact, November 17, 2006

Rob Suggs,
Marshall Space Flight Center

The Lunar Impact Monitoring team at Marshall Space Flight Center continues a coordinated program of observations. Monitoring the flux of kilogram-sized meteoroids has helped determine population indexes for some meteor showers.

The measured flux of meteoroids in the 100 gm to 1 kg range remains consistent with other observations. The observing program has significantly increased the number of lunar impacts observed, over 200 impacts have been recorded in 4 years.

This presentation (PDF) reports on 115 impacts taken "under photometric conditions" during the first 3 full years of operation.

The Lunar Impact Monitoring team plans to continue for the foreseeable future: 1) Running detailed models to help explain an observed concentration near the Moon's trailing limb 2) Building up statistics to better understand meteor shower dynamics 3) Providing support in the planning future seismometers (ILN) and LADEE, and 4) Deploying near-infrared and visible cameras with dichroic beamsplitters to the Half Meter Telescope in New Mexico.

Peak Flash Magnitude - 108 impacts over 212 hours observing time used in this study continues to show a clear Flux Asymmetry – 1.55 x 10-7 evening (left) 1.07x10-7 morning (#/km2/hr) Lunar meteoroid impact observations and the flux of kilogram-sized meteoroids, Suggs,, NASA MSFC, May 12, 2010 [NASA/MSFC].

Meteoroids 2010, Breckenridge, CO, 24-28 May 2010

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