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We present a catalog of 9888 M, L and T dwarfs detected in the Pan-STARRS13$\pi$ Survey (PS1), covering three-quarters of the sky. Our catalog containsnearly all known objects of spectral types L0-T2 in the PS1 field, with objectsas early as M0 and as late as T9, and includes PS1, 2MASS, AllWISE, and GaiaDR1 photometry. We analyze the different types of photometry reported by PS1,and use two types in our catalog to maximize both depth and accuracy. Usingparallaxes from the literature, we construct empirical SEDs for field ultracooldwarfs spanning 0.5-12 $\mu$m. We determine typical colors of M0-T9 dwarfs, andwe highlight the distinctive colors of subdwarfs and young objects. Our catalogincludes 492 L dwarfs detected in $r_{\rm P1}$, the largest sample of L dwarfsdetected at such blue wavelengths. We combine astrometry from PS1, 2MASS, andGaia DR1 to calculate new proper motions for our catalog. We achieve a medianprecision of 2.9 mas yr$^{-1}$, a factor of $\approx$3-10 improvement overprevious large catalogs. Our catalog contains proper motions for 2405 M6-T9dwarfs and includes the largest set of homogeneous proper motions for L and Tdwarfs published to date, 406 objects for which there were no previousmeasurements, and 1176 objects for which we improve upon previous literaturevalues. We analyze the kinematics of ultracool dwarfs in our catalog and findevidence that bluer but otherwise generic late-M and L field dwarfs (i.e., notsubdwarfs) tend to have higher tangential velocities compared to typical fieldobjects. With the public release of the PS1 data, this survey will continue tobe an essential tool for characterizing the ultracool dwarf population.

Photometry and Proper Motions of M, L, and T Dwarfs from the Pan-STARRS1 3$\pi$ Survey