J14: A Meteor Shower and Cluster Catalog

A new meteor shower catalog (J14) with short interval meteor clusters data has been derived from constant video meteor observations during 2007-2020. J14 was clustered from 128228 meteors that have better than 1.0 degree accuracy of radiant direction and 353231 meteors of 14 years SonotaCo Network video meteor observations (SNMv3). As the first stage, automated clustering on each subset that contains meteors in 1 degree interval of solar longitude was done. The purpose of this stage was to solve the radiant drift problem on the clustering and find exceptional drift other than 1 degree movement along with the ecliptic plane. In this clustering, a new numerical measure that express the statistical significance of a cluster concentration (Sig) was newly introduced. Sig enabled the mathematical evaluation of cluster concentration, independently from human bias. As the result of this process 1104 clusters on 1 degree solar longitude interval (1LsCluser) were determined for a whole year. All 1LsClusters information is included in J14 catalog. They contain information about velocity and the radiant distribution radius for each solar longitude, something that was not involved in past shower catalogs. By connecting the 1lsClusters, a set of 136 meteor showers were determined. There are 17 showers that have been allocated new IAU meteor shower names (IAU #1111 to #1127). Owing to the accuracy and the homogenous aspects of original orbit dataset, and despite it having the geographical restriction of the observation network in middle latitude area of northern hemisphere, J14 becomes a cyclopedic and precise catalog of active meteor showers in recent years.