what do this above mentioned belt refers to?
Orion's Belt or the Belt of Orion, also known as the Three Kings or Three Sisters, is an asterism in the constellation Orion.
Orion's Belt
Orion's Belt or the Belt of Orion, also known as the Three Kings or Three Sisters, is an asterism in the constellation Orion. 
open cluster of stars in the centre of orion nebular The Orion Nebula contains a very young open cluster, known as the Trapezium what does this nebula refers to? It is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion. is it of any specific color? Yes, Observers have long noted a distinctive greenish tint to the nebula, in addition to regions of red and of blue-violet can you state one of its features? The Nebula is visible with the naked eye even from areas affected by some light pollution. It is seen as the middle "star" in the "sword" of Orion, which are the three stars located south of Orion's Belt. can you name any star from it? AE Aurigae, 53 Arietis, and Mu Columbae
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Orion's Belt [SEP] Introduction
Orion's Belt or the Belt of Orion, also known as the Three Kings or Three Sisters, is an asterism in the constellation Orion. It consists of the three bright stars Alnitak, Alnilam and Mintaka. Looking for Orion's Belt in the night sky is the easiest way to locate Orion in the sky. The stars are more or less evenly spaced in a straight line, and so can be visualized as the belt of the eponymous hunter's clothing. They are best visible in the early night sky during the Northern Winter/Southern Summer, in particular the month of January at around 9:00 pm.