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We present spectral and kinematic evidence that 2MASS J06085283-2753583(M8.5gamma) is a member of the beta Pictoris Moving Group (BPMG, age ~12 Myr),making it the latest-type known member of this young, nearby association. Weconfirm low-gravity spectral morphology at both medium and high resolutions inthe near-infrared. We present new radial velocity and proper motionmeasurements and use these to calculate galactic location and space motionconsistent with other high-probability members of the BPMG. The predicted massrange consistent with the object's effective temperature, surface gravity,spectral type, and age is 15-35 M_Jup, placing 2MASS 0608-27 well within thebrown dwarf mass regime. 2MASS J06085283-2753583 is thus confidently added tothe short list of very low mass, intermediate age benchmark objects that informongoing searches for the lowest-mass members of nearby young associations.

The Lowest Mass Member of the beta Pictoris Moving Group