Abstract

We perform a statistical analysis of 926 confirmed falls of meteorites that occurred in the period 1860 to 2017. The distribution of meteorites over masses is approximated with a lognormal law. It has been shown that the mean interval between the detections of falls of Chelyabinsk-like meteorites is ~25 years. The time dependence of the annual number of meteorite falls is analyzed with the autocorrelation method. The (10–11)-year periodicity has been found for a group of H-chondrites and iron and iron-stone meteorites in the interval 1860 to 1960. The distributions of the number of recorded falls of meteorites over years, months, and time of day are compared to the respective distributions for bolides. The number of bolides is largest in 2005 and 2015, which suggests that there is a cycle 10−11 years long in the distribution of the bolide numbers over years. It has been noticed that more meteorites fall during the time interval from noon to midnight and in the spring-and-summer season. The number of recorded bolides does not depend on the time of day and season.

中文翻译：

---

陨石和流星落下的速度

摘要

我们对1860年至2017年期间发生的926次确认陨石坠落进行了统计分析。陨石在质量上的分布采用对数正态定律近似。研究表明，车里雅宾斯克样陨石落差的平均检测间隔约为25年。用自相关方法分析了陨石年下降次数的时间依赖性。在一组1860年至1960年之间发现了一组H球粒陨石以及铁和铁石陨石的（10-11）年周期。记录的陨石跌落次数在年，月和时间上的分布将每天的数据与bolides的相应分布进行比较。2005年和2015年的硫化物数量最多，这表明，多年来硼化物数量的分布存在10-11年的周期。已经注意到，在从中午到午夜的时间间隔以及春季和夏季，更多的陨石落下。所记录的硫化物数量不取决于一天中的时间和季节。