A new and distinct variety of cherry tree named `13S2009` with the following characteristics. `13S2009` has large flattened-heart shaped fruit, with shiny, dark red skin and red to dark red flesh. The fruit has a non-prominent suture and a flat to slightly hollow apex. The fruit matures very late in the harvest season, about 27 days after `Van` and `Bing` and 8 days after `Sweetheart`. The flesh of the fruit is very firm, and has a moderately sweet taste. The fruit are tolerant to rain splitting. The stone of `13S20-09` is intermediate in lateral view, large in size, and has strongly developed keel. The tree is upright to spreading, self-compatible, moderately vigorous and has produced good, crops annually since fruiting commenced.