Roaming the Relativistic Realm: Short-term Dynamical Evolution of Atira 2021 PH27
Abstract
General relativity effects coupled with those derived from the von Zeipel-Lidov-Kozai mechanism may play a significant role on the evolution of members of the Atira dynamical class, particularly in the case of those with the shortest sidereal orbital periods. Here, we provide a preliminary assessment of the short-term orbital evolution of 2021 PH27, a recently discovered Atira that has the shortest period among known asteroids. Our calculations, based on a publicly available orbit determination and including post-Newtonian terms in the numerical integrations, show that 2021 PH27 is a robust member of the Atira class and it may indeed be used to explore the combined effects of general relativity and the von Zeipel-Lidov-Kozai mechanism once its orbit determination is sufficiently improved.
- Publication:
-
Research Notes of the American Astronomical Society
- Pub Date:
- September 2021
- DOI:
- 10.3847/2515-5172/ac242e
- Bibcode:
- 2021RNAAS...5..205D
- Keywords:
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- Solar system;
- Asteroids;
- 1528;
- 72