Rigel, also designated as Beta Orionis, is a variable supergiant star located in the constellation of Orion. It is one of the brightest and most luminous stars in the night sky, with a visual magnitude of approximately 0.12.

The temperature of Rigel is estimated to be around 11,000 to 12,000 Kelvin (K). This means that Rigel is extremely hot, with a surface temperature that is much higher compared to our Sun, which has a temperature of approximately 5,778 K. The high temperature of Rigel results in the emission of a substantial amount of ultraviolet (UV) radiation, making it a significant source of UV light in the Orion constellation.

Rigel's high temperature is a consequence of its immense size and luminosity. It is a blue supergiant star with a mass that is estimated to be around 20 to 25 times that of our Sun. As a massive star, Rigel has a shorter lifespan compared to smaller stars like the Sun. It is believed to be several million years old, which is relatively young for a star of its type.