A Kozai-resonating Earth quasi-satellite

作者：Connors M^*

来源：Monthly Notices of the Royal Astronomical Society, 2014, 437(1): L85-L89.

DOI：10.1093/mnrasl/slt147

• celestial mechanics
• minor planets, asteroids: general
• minor planets, asteroids: individual: 2013 LX28

The recently discovered asteroid 2013 LX28 is in 1: 1 resonance with Earth, but has large eccentricity and inclination. These lead to unusual dynamics in which the Kozai resonance plays a large role on long time-scales, while interaction with the terrestrial planets causes shorter term orbital changes. For the nominal orbit, an interaction with Venus changed the nature of the Kozai resonance and injected the asteroid into resonance with Earth. Despite frequent planetary encounters, the nominal orbit shows remarkable stability. Recovery prospects for this object are excellent, so that investigation of its remarkable properties should be able to proceed on a firmer observational base in future.

• 出版日期2014-1