 Perihelion was August 28, 2006.Of Barnard's other two periodic comets, the first, D/1884 O1 (Barnard 1) was last seen on November 20, 1884, and is thought to have disintegrated.The last, 206P/Barnard-Boattini marked the beginning of a new era in cometary astronomy, as it was the first to be discovered by photography.