Two other items of interest are Voyager 1, launched in September 1977, which in August 2012 left the solar system and entered galactic space. It is at 255 degrees, on the Sun table, approximately 1100 yards out, at the 20 billion-to-one scale. No marker yet.
The other is our suns’ nearest neighbor, Alpha Centauri. It is 4.5 light-years away, at the 20 billion to one scale, which puts it about 100 miles North and 30 miles East of Mexico City. No marker yet, if anyone is planning on going there let us know and we will give you a set of GPS coordinates so you can poke a stick into the ground and take a picture for us.