Poseidon and Euryale
Orion was the son of the sea-god Poseidon and Euryale, daughter of Minos, King of Crete. --from Wikipedia
Sirius Black's parents are Orion and Walburga Black. If you want to know more search the most noble house of Black family tree. The official site for Harry Potter info gives Cygnus Black and Druella Rosier as Sirius' parents. Orion and Walburga Black are his uncle and aunt.
One.Orion doesn't "have constellations". Orion is a constellation.
Orion is a constellation made up in the minds of the ancients to represent "Orion" a hunter in mythology. The Orion Nebula is a diffuse nebula located south or Orion's belt. It is an area of extensive star formation. It is only called Orion Nebula as it is seen within the constellation of Orion. See related questions
Rigel is located in the constellation of Orion. It is the brightest star in the Orion constellation and can be seen as the left foot of the giant in Orion.
The Orion telescopes are named after the constellation with the same name, the Orion constellation. The Orion constellation is named after the hunter in Greek mythology also with the same name, Orion.
Orion is a constellation
Orion.
orion
Betelgeuse is part of Orion, it is the red star on Orion's left shoulder.
Orion represent the hunter. He was the son of Poseidon.
The constellation Orion is named after a hunter in Greek mythology named Orion. According to the myth, Orion was a great hunter known for his strength and skill. When he died, he was placed in the sky by the gods as a constellation.