Near-Earth Asteroids as the Parents of the δ-Cancrid Meteoroid Stream

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外文摘要：The δ-Cancrid meteoroid stream forms four active meteor showers which are observable on the Earth annually during January-February and August-September.The stream's definite parent comet has not been established.We performed a search for near-Earth asteroids(NEAs)associated with this stream.We have followed the backward evolution of the orbital elements of a sample of NEAs and found their orbits at the Earth-crossing positions.Using these orbits,we calculated the theoretical parameters of meteor showers associated with the considered NEAs.We carried out our search for observable active showers that match theoretically predicted ones with published data,and the result turned out that the predicted meteor showers of 13 NEAs were identified with the active showers produced by the δ-Cancrid meteoroid stream.The comet-like orbits of NEAs and established association with active meteor showers indicate their common cometary origin.The NEAs considered are moving within the stream and likely represent the dormant remnants of a parent comet of the δ-Cancrid asteroid-meteoroid complex that disintegrated more than 12 thousand years ago.

外文关键词：

comets:generalminor planetsasteroidsδ-Cancridsmeteoritesmeteorsmeteoroids

作者：

G.I.Kokhirova、M.Zhang、X.-G.Li、A.I.Zhonmuhammadi、X.Liu

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作者单位：

Institute of Astrophysics,National Academy of Sciences of Tajikistan,Ayni 299/5,Dushanbe,734067,Tajikistan

Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

Key Laboratory for Radio Astronomy,Chinese Academy of Sciences,Nanjing 210008,China

Xinjiang Key Laboratory of Radio Astrophysics,Urumqi 830011,China

University of Chinese Academy of Sciences,Beijing 100049,China

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出版年：

2024

DOI：

10.1088/1674-4527/ad8c87

天文和天体物理学研究

中国科学院国家天文台

天文和天体物理学研究

CSTPCD

影响因子：0.406

ISSN：1674-4527

年,卷(期)：2024.24(12)