Orion's Belt or Belt of Orion is belt of 3 stars in one line in the constellation Orion. Ancient Arabic names of these 3 stars are Alnitak, Alnilam and Mintaka. These 3 stars are named by astronomers as ζ Ori (Alnitak), ε Ori (Alnilam), and δ Ori (Mintaka). These 3 stars are best visible in the night sky during the month of January.