Rob H. McNaught has announced the discovery of a new comet on May 10, 2008, within the framework of Siding Spring Survey. The cometary nature of l' object was confirmed by N. Teamo and J.C. Shovel (Tiki Observatory, Punaauia). The preliminary orbital elements of comet C/2008 J4 (McNaught) indicate a perihelion passage on June 19, 2008, at a distance of 0.4 AU from the Sun. The comet could not survive its passage if it were closer to the Sun.