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We report the identification of a very low mass new binary system 2MASSJ10274572+0629104, based on Kepler K2 photometry and Gaia DR2 astrometry. TheK2 light curve is consistent with a beat pattern of two periodic signals, andusing Lomb-Scargle periodogram, we find two rotation periods of 0.2114 \pm0.0002 day and 0.2199 \pm 0.0003 day.We conclude that these rotation periodsarise from two stars with similar spectral types of M6, and have near equalluminosity. It is the first ultracool binary system to be identified based onbeat patterns in the light curve. Near-infrared spectroscopy yields RV = -9.8\pm 0.6 km s^-1, v sin i = 21.5 \pm 1.1 km s^-1, T_eff = 3110 \pm 40 K, and logg = 5.2 \pm 0.2. The motions are consistent with a young age, as are therotation periods, but the source does not appear to be part of any known movinggroup. Furthermore, we detected three strong white light flares in the K2 lightcurve, with estimated total bolometric (UV/optical/IR) energies to be 2.6 X10^33, 5.0 X 10^33, and 3.5 X 10^33 erg respectively.

2MASS J10274572+0629104: The very short period young M6 Dwarf Binary System identified in K2 data