The Possibility of Mirror Planet as Planet Nine in Solar System

TL;DR

This paper explores the hypothesis that a mirror planet, potentially captured or formed in the solar system, could explain the anomalies attributed to Planet Nine, offering a dark matter-based alternative with unique observational signatures.

Contribution

It introduces the concept of a mirror planet as a candidate for Planet Nine, linking dark matter physics with planetary astronomy and proposing observational methods based on gravitational effects.

Findings

Mirror planet could explain orbital anomalies of trans-Neptunian objects.

Mirror planet may have faint electromagnetic signatures or be undetectable electromagnetically.

Gravitational effects could reveal the presence of a mirror planet.

Abstract

A series of dynamical anomalies in the orbits of distant trans-Neptunian objects points to a new celestial body (usually named Planet Nine) in the solar system. In this draft, we point out that a mirror planet captured from the outer solar system or formed in the solar system is also a possible candidate. The introduction of the mirror matter model is due to an unbroken parity symmetry and is a potential explanation for dark matter. This mirror planet has null or fainter electromagnetic counterparts with a smaller optical radius and might be explored through gravitational effects.