re: It's path
If you're looking for a good reference point to locate S-W3, from http://skymaps.com/, it looks like comet S-W 3 may come very close to Zeta Herculis TONIGHT, April 30th for those in the US/Northern Hemisphere. See/print the sky map!
This is a very nice site. Scroll your mouse/or cat over the image for info on Hercules(etc!)
