Abstract In the morning of June 21, 2018 (1:16 Universal Time (UTC)) the space body entered the Earth atmosphere in the Lipetsk region, Russia. This event was detected by a number of registration systems in cars, satellite observations of bolide light curve and subsequent dust trail. The videos, photos, satellite data allow us to calculate the trajectory and the orbit of the Ozerki bolide. The atmospheric entry velocity is 14. 9 ​± ​1 ​km/s. The height of the depression point is 32.8 ​± ​0.9 ​km and that of the maximum brightness is 27.2 ​± ​0.9 ​km. The pre-atmospheric orbit of the Ozerki meteoroid was also calculated: q ​= ​0.67 ​± ​0.04 AU, a ​= ​0.84 ​± ​0.02 AU, e ​= ​0.199 ​± ​0.030, i ​= ​18.44° ±3.05°, Ω ​= ​89.6561° and ω ​= ​335.29° ±5.15°. The geocentric radiant position is RA ​= ​307.51°±3° and DEC ​= ​43.11°±3.° The found material was called Ozerki meteorite and it is classified as an ordinary chondrite (L6). The estimated: mass of the meteoroid is 94 ​± ​20 tons, the energy is 2.5 ​± ​0.5 ​kt TNT, diameter is 3.7 ​± ​0.5 ​m.

中文翻译：

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Ozerki流星体参数的调查

摘要 2018年6月21日上午（世界标准时间（UTC）1:16），该空间体进入俄罗斯利佩茨克地区的地球大气层。这一事件被汽车中的许多登记系统、对火球光曲线和随后的尘埃轨迹的卫星观测检测到。视频、照片、卫星数据使我们能够计算 Ozerki 火炬的轨迹和轨道。大气进入速度为14. 9 ± 1 km/s。凹陷点高度为32.8±0.9公里，最大亮度为27.2±0.9公里。还计算了Ozerki流星体的大气前轨道：q = 0.67 ± 0.04 AU, a = 0.84 ± 0.02 AU, e = 0.199 ± 0.030, i = 18.44 ° ±3.05°，Ω = 89.6561° 和 ω = 335.29° ±5.15°。地心辐射位置为 RA = 307.51°±3° 和 DEC = 43.11°±3。° 发现的物质被称为 Ozerki 陨石，它被归类为普通球粒陨石 (L6)。估计：流星体质量为94±20吨，能量为2.5±0.5kt TNT，直径为3.7±0.5米。