Constellation List
Star List
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Bibliography and Credits
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Alnilam
(al-NIGH-lam)
Epsilon Orionis
Names For This Star
Other names for this star are Alnihan and Alnitam. The name of the star derives from the Arabic term Al Nitham or Al Nathm meaning "The String of Pearls".
Description of the Star
Alnilam is a blue B0Ia supergiant star. According to the The Bright Star Catalog the star is about 30 times the diameter of the sun. The spectral type implies an effective temperature of 30,000 K and a luminosity of 250,000 times that of the sun.
Other Designations For This Star
Flamsteed |
46 Orionis |
Hipparcos Identifier (HIP Number) |
26311 |
Harvard Revised (HR Number) |
1903 |
Henry Draper Catalog (HD Number) |
37128 |
Bonner Durchmusterung (BD Number) |
BD-01 969 |
Smithsonian Astrophysical
Observatory compendium (SAO Number) |
132346 |
Fundamental Katalog (FK5 Number) |
210 |
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