Could 1I/'Oumuamua be macroscopic dark matter?

TL;DR

This paper explores the possibility that 1I/'Oumuamua is actually a macroscopic dark matter object, which could explain its observed trajectory deviations and challenge its classification as a typical asteroid.

Contribution

It proposes a novel hypothesis that 1I/'Oumuamua might be a dark matter macro, providing a different interpretation of its nature and orbital effects.

Findings

Potential orbital deviations caused by a dark matter macro

Mass estimate of the macro as high as 10^{25}g

Implications for dark matter detection and astrophysics

Abstract

1I/'Oumuamua, formerly known as A/2017 U1, is a sizable body currently passing through the solar system. It is generally considered to be a rocky asteroid-like object that came from another planetary system in the Milky Way. We point out that 1I/'Oumuamua may instead be a chunk of dark matter, a "macro," possibly as massive as $10^{25}$g if it is of nuclear density. If so, then its passage will have caused measurable deviations in the orbits of Mercury, the Earth and Moon.