Can you describe the telescopes that gave twelve foot resolution? If we are bouncing radar off of a small isolated object we can get that resolution,...
I'd go with 150,000,000 km, unless someone wanted a more exact value for a real reason, in which case I'd supply the specifics of the orbit, and let...
I don't actually know all the details of what you are looking for, but in the shortish term (perhaps millions of years), there will be a lot of dust...
If you had a test mass (tiny mass compared to the Earth or Moon) at the lunar L4 or L5 point, it might be stable, but the influence of the Sun (a 4th...