Picante is a Java implementation of the core functionality of NAIF SPICE. Key features: Pure Java; no native libraries needed replicates NAIF SPICE ephemeris calculations and frame transforms to 1e-12 precision Thread safe Although Picante reproduces many SPICE capabilities, it is implemented very differently. Kernels are loaded into a " SpiceEnvironment". The user can instantiate multiple SpiceEnvironments to compare calculations with different sets of kernels, or to run a multithreaded application. Picante was developed by the Analysis and Applications group of the Space Exploration Sector of the Johns Hopkins University Applied Physics Laboratory. It is released under the MIT License.