Which star in the sky represents loneliness?

The main star α in the sea snake constellation/water snake constellation is 2.0, and its orange name means "loneliness".

It comes from the Arabic word "lonely snake", which accords with the fact that it is the only bright star in this sky.

Legend has it that two small constellations riding on the snake's back-Raven and Dajue-make us distinguish different parts of the water snake, and mythological writers often make corresponding distinctions between Ophiuchus. Astronomer john flamsteed (1646- 17 19) divided it into four parts. From beginning to end, or from west to east, there are extensions of Ophiuchus, Ophiuchus and Dajue, Ophiuchus and Crow, Ophiuchus. The whole constellation is considered as a female water snake, which is contrary to the modern southern water snake. The little snake is a male and was created as a supplement to Ophiuchus. Ophiuchus is an ancient constellation. According to the Mesopotamian legend, he has been regarded as the original water snake Tiamat since 1200 BC, and was killed by Wu Shen Marduk in the war of the gods. However, this connection can also be found in dragons in Tianlong and sea monsters in Cetaceans. In the most famous story about this snake, it is considered as Rania, the long snake that Hercules challenged in the second item of his 12 achievement. There is a rich and sacred coastal area near argon, which is often harassed by basilisks living in unfathomable swamps. It has a dog's body and nine heads (the most typical hydra), each of which emits poisonous smoke. Cut off or break one of them, and two or three new heads will grow immediately. In order to defeat the monster, Hercules followed Athena's strategy: he fired a rocket into the snake pit to force it out, and then held his breath and fought with the monster. He cut off the heads of several snakes, but with each blow, more heads grew out. At this time, a crab sent by Hera quickly climbed out of the swamp and bit Heracles's foot, but it was immediately crushed and turned into a cancer. Now, Lolos, the charioteer of Hercules, came to help him. Lolos made a fire in a corner of the forest, picked up the burning branches, burned the wounds left after cutting off the monster's head, stopped the blood flow, and made the new head unable to grow. At the same time, Hercules found the immortal golden head in a mess, cut it down and buried it under a heavy boulder. He took out the intestines of the monster and painted the bile of the monster on the arrow. From then on, any trauma caused by these arrows was fatal.