SORA: Stellar occultation reduction and analysis

The stellar occultation technique provides competitive accuracy in determining the sizes, shapes, astrometry, etc., of occulting body, comparable to in-situ observations by spacecraft. With increase number known Solar System objects expected from LSST, highly precise astrometric catalogues, such as Gaia, and improvement ephemerides, occultations will become more common with a higher chords each observation. In context Big Data era, we developed SORA, an open-source python library reduce analyse data efficiently. It includes routines predicting events up determination bodies' positions.