http://en.wikipedia.org/wiki/P/2013_P5
The term "main-belt comet" was new to me until just now. From:P/2013 P5 is an asteroid (or main-belt comet)
http://en.wikipedia.org/wiki/Main-belt_comet
Humans and monkeys are different, but we both orbit the Sun. If I start behaving like a monkey, it doesn't make me a monkey, but it won't stop some people from calling me one.The term 'main-belt comet' is a classification based on orbit and the presence of an extended morphology. It does not imply that these objects are comets or that the material surrounding their nuclei was ejected by the sublimation of volatiles, as on comets.
Nitpicker (doin' it upside down).