On the orbit and chemical nature of PHI-bootids meteorids

Abstract

The phi-Bootids is a minor meteor shower whose activity period extends from April, 4 to May, 15, with a maximum peak around May, 2. An asteroidal origin has been postulated for the phi-Bootid meteoroid stream, although its parent body remains unknown [1]. Thus, additional observations during the above-mentioned activity period may provide helpful information to improve our knowledge about this stream. Here we present here the preliminary analysis of a sporadic double-station phi-Bootid fireball recorded by us on May 10, 2011. It was recorded together with its emission spectrum in the framework of the continuous spectroscopic campaign developed by the SPanish Meteor Network (SPMN). From this analysis we have inferred information about its atmospheric trajectory and radiant, but also about some physico-chemical properties of the corresponding meteoroid, such as tensile strength and chemical composition.