>>4339000 lb
>>4338630 lb
The "impact crater" map from anon LB superimposed over current geography. The "crater" is considerably south of the Naval Research Laboratory that we located on Chesapeake Beach. If there's any particular relationship I don't see it.
Sorry the image is very blurry but that is a result of resizing layers many times to get a near fit. Close enough to show that it isn't the same place.