Alnilam

375 000 L ☉

Alnilam the name of the star is ε Orionis ( Epsilon Orionis ). In the constellation Orion is Alnilam is in the middle of Orion's belt, to which even the stars Alnitak and Mintaka and are located in the large, bright open cluster Cr 70.

Importance

The name Al Nilam is derived from Arabic النظام, DMG to - Nizam, arrangement ( of beads, belts center) '. Closely related also Arabic نظم, DMG nazm, pearl necklace '. Other variants are also Alnihan and Alnitam: but all three variants are obviously wrong transcriptions of the original Arabic name.

Description

Alnilam is a blue supergiant of spectral type B0 and belongs to. The temperature is about 25,000 Kelvin.

Epsilon Orionis is one of the most luminous stars we know. The bolometric luminosity exceeds that of our sun around the 375,000 -fold. With a diameter of about 36 million kilometers, it is about 26 times larger than our sun.