What is the meaning of Alnilam?
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What is the meaning of Alnilam?
the fourth brightest star in the constellation Orion. The name Alnilam comes from the Arabic Al Nitham or Al Nathm, meaning “the string of pearls.” The three stars of Orion’s belt have a rich history in many culture’s folklores.
What class is Alnilam?
Alnilam is the middle star of Orion’s Belt, one of the best known asterisms in the night sky, also formed by the bright Alnitak and Mintaka….Alnilam – Epsilon Orionis.
| Spectral class | B0 Ia |
|---|---|
| Mass | 40 M☉ |
| Luminosity | 537,000 L☉ |
| Radius | 32.4 R☉ |
| Temperature | 27,500 ± 100 K |
What kind of star is Alnilam?
blue supergiant
It is the 29th-brightest star in the sky (the fourth brightest in Orion) and is a blue supergiant. Together with Mintaka and Alnitak, the three stars make up Orion’s Belt, known by many names across many ancient cultures. Alnilam is the middle star. It is slightly variable, from magnitude 1.64 to 1.74.
What will happen to Alnilam?
Eventually the star fuses the last element it can use as a fuel source (for massive stars, this element is iron), and the result, as usual, depends on the mass: Alnilam will blow itself to bits in a supernova, and the dead remnant will be a neutron star or a black hole.
What is the luminosity of alnilam?
832,000 L☉
Alnilam/Luminosity
How far away is alnilam from Earth?
1,344 light years
Alnilam/Distance to Earth
How much brighter is alnilam than the sun?
Its absolute magnitude has been estimated to be around -6.89. Alnilam is around 537.000 times brighter than our Sun, and because of this brightness, it illuminates a molecular cloud, NGC 1990, that surrounds the star. Alnilam is more than 30 times bigger than our sun.
What spectral type is alnilam?
B0Ia
Alnilam/Spectral type
Is alnilam a main sequence star?
Alnilam is a main star in the constellation Orion and makes up the constellation outline. Based on the spectral type (B0 Ia) of the star, the Alnilam colour is blue . Alnilam is the 29th brightest star in the night sky and the 4th brightest star in Orion based on the Hipparcos 2007 apparent magnitude.
Will alnilam become a black hole?
As the fuel dwindles, Alnilam will change from blue to red and expand in size even more, but its luminosity will only increase. Ultimately, the star will end its life as a supernova, leaving a black hole in its wake.
Is alnilam a binary star?
Alnilam is the 30th brightest star in the sky and the fourth brightest in Orion constellation, after Rigel, Betelgeuse and Bellatrix. It is a binary star approximately 916 light years from Earth. It has an apparent magnitude of 2.21 and an absolute magnitude of -4.99.
What 3 stars make up Orion’s belt?
The three stars that traditionally make up the belt are, from west to east: Mintaka, Alnilam and Alnitak. The names of the outer two both mean “belt” in Arabic, while Alnilam comes from an Arabic word that mean “string of pearls,” which is the name of the whole asterism in Arabic, according to astronomer Jim Kaler.