172AU

172AU is a hypothetical or speculative designation for an astronomical object located far beyond the traditional boundaries of the Solar System. The notation "AU" stands for astronomical unit, a standard measure of distance equal to approximately 149.6 million kilometers, representing the average distance between the Earth and the Sun. The designation "172AU" suggests an object situated roughly 172 times this distance from the Sun, placing it well beyond the orbit of Neptune, which averages about 30 AU from the Sun.

The object is not officially recognized by astronomical bodies such as the International Astronomical Union (IAU), and its existence remains unconfirmed. Speculation about 172AU often arises in discussions surrounding potential undiscovered planets, rogue celestial bodies, or anomalies in the outer Solar System. Some theories propose that such an object could influence the orbits of distant Kuiper Belt objects or even account for unusual gravitational effects observed in the outer Solar System.

The idea of 172AU has been referenced in fringe astronomy communities and online forums, where it is sometimes associated with claims of undiscovered planets, such as "Planet X" or "Nemesis." However, these claims lack substantial observational evidence and are generally not supported by mainstream scientific consensus. The vast distances involved make direct detection extremely challenging, relying on indirect methods like gravitational perturbations or infrared surveys.

As of current knowledge, no confirmed astronomical object has been identified at this distance from the Sun. The outer Solar System remains an active area of research, with ongoing surveys like the Outer Solar System Origins Survey (OSSOS) and the Dark Energy Survey contributing to our understanding of distant celestial bodies. Until further evidence emerges, 172AU remains a speculative concept rather than a verified astronomical entity.