Sirius

Algol

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Algol, Beta Persei, is a bright multiple star located in Perseus. It is the second brightest star in the constellation, after Mirfak, Alpha Persei. The star is also known as Gorgona, Gorgonea Prima, Demon Star and El Ghoul. It lies at an approximate distance of 90 light years from Earth and has an apparent magnitude that varies between 2.12 and 3.4.
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Winter Hexagon

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winter circle,winter stars

The Winter Hexagon, also known as the Winter Circle, is a prominent winter asterism formed by seven stars prominent in the winter sky.

These are Rigel in Orion, Aldebaran in Taurus, Capella in Auriga, Castor and Pollux in Gemini, Procyon in Canis Minor, and Sirius in Canis Major constellation.

Sirius and Procyon are also part of the Winter Triangle, a smaller asterism that these two stars form with Betelgeuse in Orion.
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