Hi Ed, > I hadn't thought of that [joining MPML], but then I don't think > of many things now days. I assumed that list concerned simply > observational data, and was quite expensive to join.
Richard is the administrator for the Minor Planet Mailing List, and (just like the Meteorite List) it is completely free to join. Anything asteroid- (or comet-) related is completely acceptable on MPML, and you would certainly find multiple people who could address your questions related to warning time for low-albedo NEOs in various orbits. The hardest detection problem is a post-perihelion Apollo due to the poor phase angle and low solar elongation. There is an unavoidable "detection hole" in this direction which prevents earth-bound telescopes from seeing small objects until they are hours from impact. (It is even possible to design pathological cases where you will never detect the object -- you'll just get blindsided. Fortunately these cases represent a very tiny percentage of all possible impact scenarios.) --Rob ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
