To correct, in the prior post, I wrote: "The comet [skirted] just below the ecliptic but perpendicular to Earth's orbital path between the Earth and Sun. It is now on its outbound leg." Should have read "parallel" not "perpendicular" and also that: The comet skirted just below the ecliptic but parallel to Earth's orbital path between the Earth and Sun about 0.2 a.u. from the Earth. Now the comet is on its outbound leg moving from below to above the ecliptic plane of the solar system. See NASA JPL 3-D Orbit Diagram for C/2007 W1 (Boattini) http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=C%2F2007+W1&orb=1 As a result, Boattini's apparent motion on the celestial sphere relative to the ecliptic has changed. Over the next month it will appear to move perpendicular to the ecliptic, traveling from the Cetus circlet to Aries. Near July 28, Bottaini will cross the ecliptic directly in front of the Earth, about 1 a.u. distance, but essentially on the Earth's future orbit path. This raises the interesting speculation of whether we will see some enhanced meteor activity on August 27, when the Earth passes through that same point. On August 27, there will be a first quarter Moon. - Kurt