Alnitak (ζ Orionis)
Alnitak (ζ Orionis) is a rare hot blue-white star (O9.5Ib SB) in the constellation of Orion
This triple star system is located right next to the Flame Nebula (NGC2024)
. It consists of two close binary components and a third star, Alnitak (ζ Orionis)
. It is one of the three belt stars in the famous constellation Orion
Alnitak is a rare hot blue-white star, which shines about 10.000 times brighter than our own Sun. Its diameter is about 20 times that of our Sun, which makes it a real giant. Its surface temperature measures at around 25.000 degrees Celsius. This is extremely hot compared to our own Sun which reaches only around 5.500 degrees Celsius.