ν Oct - The brightest star in the constellation has a magnitude of 3.74. It is an orange giant.

λ Oct - A binary star with brightness components of 5.5mag and 7.7mag, separated by 3 arc seconds, therefore we will need a telescope with an objective diameter of around 100 mm to resolve them.

σ Octantis - The Southern Pole Star, or rather a star with a brightness of 5.4 magnitude, is visible only exceptionally with the naked eye on clear nights. It is so faint that it hardly helps us at all in finding the southern celestial pole. To determine it, the longer arm of the Southern Cross is used, which points to it, or the pair of Magellanic Clouds, which form an approximately equilateral triangle with it. Sigma Octantis is located 270 light-years away from Earth.

R Oct - The variable star of Mira Ceti type reaches a brightness of 6.4 mag at its maximum, which can be easily seen with a telescope. However, it drops to as low as 13.2 mag at its minimum and disappears from view. Its period is 406 days.

S a U Oct - Other variable stars of the Mira Ceti type, which can reach a maximum magnitude of 8, but only drop to a minimum of 14mag. Their periods are 259 and 303 days.