* Astronomy

A magnitude 19 object, that had the appearance of an asteroid when it was discovered on September 25, 2007 by A. Boattini (MT Lemmon Survey) , has now revealed its cometary nature after confirmation observations.
The preliminary orbital elements of the comet C/2007 S2 (Lemmon) indicate a perihelion passage on October 12, 2007, at a distance of 6,2 AU from the Sun.

http://cfa-www.harvard.edu/mpec/K07/K07T11.html (MPEC 2007-T11)

http://cfa-www.harvard.edu/iau/Ephemerides/Comets/2007S2.html