Small bodies in the solar system are conventionally classified into asteroids
and comets. However, it is recently found that a small number of objects can
exhibit properties of both asteroids and comets. Some are more consistent with
asteroids despite episodic ejections and are labeled as "active asteroids",
while some might be aging comets with depleting volatiles. Ejecta produced by
active asteroids and/or dormant comets are potentially detectable as meteor
showers at the Earth if they are in Earth-crossing orbits, allowing us to
retrieve information about the historic activities of these objects. Meteor
showers from small bodies with low and/or intermittent activities are usually
weak, making shower confirmation and parent association challenging. We show
that statistical tests are useful for identifying likely parent-shower pairs.
Comprehensive analyses of physical and dynamical properties of meteor showers
can lead to deepen understanding on the history of their parents. Meteor
outbursts can trace to recent episodic ejections from the parents, and "orphan"
showers may point to historic disintegration events. The flourish of NEO and
meteor surveys during the past decade has produced a number of high-confidence
parent-shower associations, most have not been studied in detail. More work is
needed to understand the formation and evolution of these parent-shower pairs.Comment: PSS in pres
