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Among dual-status objects, only one show recurrent distinct cometary activity. It is 133P/Elst-Pizarro. I think we can rename it to cometary designation. Cometary activity of other dual-status objects may be transient. 174P/(60558) Echeclus's cometary activity in 2005 seem to be a result of asteroid impact. Chiron's cometary activity was seen only in 1980s-1990s, when the centaur was in perihelion. 107P/Wilson-Harrington showed distinct cometary activity only in 1949. The cometary activity of 176P/LINEAR was seen only in one apparition (2005). Fjörgynn (talk) 10:51, 18 December 2010 (UTC)