Based on observations from the K2 mission of the Kepler Space Telescope a study is made of the activity of EPIC 204376071, a young object in the Upper SCO association with an age of 11±3 million years whose light curve has a single darkening lasting one day with a depth of about 80%. EPIC 204376071 is a low-mass M-dwarf with a mass of 0.16 M_⨀. Based on observations from the C15 campaign of the K2 mission we refined the rotation period and the amplitude of the variability of the star’s brightness, and also estimated the absolute magnitude of the spottedness parameter A by the standard method. The magnitude of the star’s rotation period, P, equals 1.6270 ± 0.030 days. The area of the spots on the surface of EPIC 204376071 exceeds the maximum spot area on the sun and is on the order of 7900 msh. The results of a recovery of the temperature inhomogeneities on the surface of EPIC 204376071 are presented. Two cold regions separated in longitude by roughly 150° can be distinguished on the constructed chart. For estimating the properties of the flare activity of EPIC 204376071 one of the most reliable flares with a brightness amplitude of about 4% was examined. The measured relative energy RE of the flare was 212 s. The calculated energy E_fl of the flare turned out to be equal to 1.1·1034 erg (logE_fl = 34.05). The probable coronal mass ejection corresponding to it may reach 4.1·10²⁰ g. Published data on the possible nature of the single occultation of diurnal duration with a depth of about 80% on the light curve of EPIC 204376071 are examined.

根据开普勒太空望远镜 K2 任务的观测结果，对 EPIC 204376071 的活动进行了研究，EPIC 204376071 是 SCO 上层协会中的一个年轻天体，年龄为 11±3 百万年，其光变曲线有一次持续一天的变暗。深度约为80%。EPIC 204376071 是一颗低质量 M 矮星，质量为 0.16 M _⨀。根据K2任务C15活动的观测结果，我们细化了恒星自转周期和亮度变化幅度，并通过标准方法估计了斑点参数A的绝对星等。恒星自转周期 P 的大小等于 1.6270 ± 0.030 天。EPIC 204376071表面的斑点面积超过了太阳上的最大斑点面积，约为7900米什。给出了 EPIC 204376071 表面温度不均匀性的恢复结果。在构建的海图上可以区分出两个经度相距约 150° 的寒冷地区。为了估计 EPIC 204376071 耀斑活动的特性，对亮度幅度约为 4% 的最可靠耀斑之一进行了检查。测得的耀斑相对能量 RE 为 212 秒。计算出的能量E_耀斑的fl结果等于 1.1·1034 erg (logE _fl = 34.05)。与之对应的可能的日冕物质抛射量可能达到4.1·10 ²⁰ g。对 EPIC 204376071 光曲线上深度约为 80% 的单日掩星可能性质的已发表数据进行了检查。