The Indiana fireball with its associated sonic booms was assumed to be a Lyrid, mostly ice, and unlikely to produce a meteorite. But could it also be the case that the Indianameteor had nothing to do with the Lyrids or Comet Thatcher at all, but was anasteroidal belt meteor , that coincidentally hit during the time of theLyrids? Multiple observations of thefireball could be analyzed via the method in Porter’s Cometsand Meteor Streams (Wiley, 1952) to determine its past orbitand radiant. If this is different thanthe Lyrids, a substantial meteorite may exist in Hamilton County.
Francis GrahamEast Pittsburgh
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