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We introduce a novel search technique that can identify trans-neptunianobjects in three to five exposures of a pointing within a single Hubble SpaceTelescope orbit. The process is fast enough to allow the discovery ofcandidates soon after the data are available. This allows sufficient time toschedule follow up observations with HST within a month. We report thediscovery of 14 slow-moving objects found within 5\circ of the ecliptic inarchival data taken with the Wide Field Channel of the Advanced Camera forSurveys. The luminosity function of these objects is consistent with previousground-based and space-based results. We show evidence that the sizedistribution of both high and low inclination populations is similar forobjects smaller than 100 km, as expected from collisional evolution models,while their size distribution differ for brighter objects. We suggest the twopopulations formed in different parts of the protoplanetary disk and afterbeing dynamically mixed have collisionally evolved together. Among the objectsdiscovered there is an equal mass binary with an angular separation ~ 0."53.

Trans-Neptunian Objects with Hubble Space Telescope ACS/WFC