The Search for the Gamma Lyrid Progenitor

Grazier, Kevin R

关键词: ASTRONOMY;    METEOROID SHOWERS;    ORBITAL ELEMENTS;    ORBITS;    VIEWING;   

RP-ID  :  M19-7356

学科分类：天文学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

On 5 February 2015, a previously unknown meteor shower, the γ Lyrids were observed for the first time. Because of the Sun-Earth-Moon viewing geometry, however, stream members were observed almost exclusively by the Canadian Meteor Orbit Radar (CMOR). The γ Lyrids did not appear again until 2018, and that outburst was stronger than in 2015. This study analyzed the 2015 and 2018 CMOR data in order to determine the orbital parameters of the stream in an attempt to determine the γ Lyrid parent body. Of primary importance is to determine if the γ Lyrids will recur in a predictable manner. Two bodies, with dramatically different orbital parameters and evolutionary behaviors, emerged as the leading candidates: 2003 EH1 and 1854 R1.