Context
An approximation known as the Tisserand criteria (T) is applied to cometary encounters with planets (such as Jupiter) and used to describe their orbital inter-relationship. Asteroidal-appearing bodies in elliptical orbits with Jovian Tisserand parameters Tj < 3 only began to appear in search programs in the mid-1980’s - Kridsadaporn's Jovian Tisserand parameter is Tj = 2.858. Before this, the failure to identify these objects was used as an argument against the existence of extinct cometary nuclei. Over the past two decades, an increasing number of asteroids, based upon their orbital and physical characteristics, have been suggested as extinct or dormant comets candidates. It is now considered likely that within the asteroid population there exist a significant number of dormant or extinct comets.
More recently, Kridsadaporn has received closer attention after having been included in a number of studies relating to the analysis of spectral properties of asteroids in cometary orbits (ACOs); and, collisional activation processes, and the dynamic and physical properties of ACOs. The investigation of ACOs is considered important in the understanding of formation processes of cometary dust mantles and the end states of comets, so as to determine the population of Jupiter family comets (JFCs), and, to also understand the dynamical processes involved in the transport mechanism of asteroids from typical asteroidal orbits to cometary-like ones.
In earlier studies, ACOs have sometimes been referred to as cometary asteroids or comet-asteroid transition objects.
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