Polaris Australis

Polaris Australis, also known as Sigma Octantis, is the current southern polestar. However, unlike the northern polestar, Polaris, Polaris Australis is very difficult to see with the naked eye, having a magnitude of only 5.4. The constellation it resides in is Octans.1

A polestar is the brightest star that appears closest to either celestial pole. Due to the precession of the equinoxes, the position of the celestial poles shifts over a long period, meaning different stars serve as the polestar over millennia. Currently, Polaris is the northern polestar, but in about 14,000 years, Vega will take on this role. The northern polestar has historically been crucial for navigation in the Northern Hemisphere.2