Alpha Orionis -

A red supergiant nearing the end of its life cycle.

It is roughly 100,000 times brighter than the Sun but significantly cooler, with a surface temperature of approximately 3,600 Kelvin (6,020°F). alpha orionis

Recent studies suggest the existence of a smaller, Sun-like companion star (Betelgeuse B) that may influence its long-term brightness cycles. Life Cycle and Future A red supergiant nearing the end of its life cycle

Distinctive orange-red hue, visible even without equipment. Variability and Observation 600 Kelvin (6