The Sickle
The Sickle of Leo is one of the most recognizable patterns in the spring sky. Formed by some of the brightest stars in the constellation… Read More »The Sickle
Asterism
The Keystone
The Keystone is an asterism formed by four relatively bright stars in the constellation Hercules: Pi, Eta, Zeta and Epsilon Herculis. The trapezoid-shaped pattern makes it easy for observers to identify the constellation and to find several well-known deep sky objects. On a clear night, the Keystone can be seen between the bright Vega, the brightest star in Lyra, and the stars of Corona Borealis, the Northern Crown. The asterism represents Hercules’ torso.
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Kemble’s Cascade
Kemble’s Cascade, or Kemble 1, is an asterism located in the northern constellation Camelopardalis, the Giraffe. The asterism is formed by more than 20 faint… Read More »Kemble’s Cascade
Great Square of Pegasus
The Great Square of Pegasus is an asterism formed by three bright stars in Pegasus constellation – Markab, Scheat and Algenib – and Alpheratz in… Read More »Great Square of Pegasus
Great Diamond
The Great Diamond, or Diamond of Virgo, is a prominent spring asterism formed by the bright stars Cor Caroli in Canes Venatici constellation, Arcturus in Boötes, Spica in Virgo, and Denebola in Leo. The asterism shares the stars Arcturus and Spica with the Spring Triangle, an asterism formed by these two stars with Regulus, the brightest star in Leo.
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Spring Triangle
The Spring Triangle is a prominent spring asterism formed by the bright stars Arcturus in Boötes constellation, Spica in Virgo, and Regulus in Leo. The asterism can be seen in the southeastern sky from March to May by observers in the northern hemisphere. It shares two stars – Arcturus and Spica – with the larger spring asterism known as the Great Diamond, or Diamond of Virgo.
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Winter Hexagon
The Winter Hexagon, also known as the Winter Circle, is a prominent winter asterism formed by seven stars that dominate the northern winter sky. These are… Read More »Winter Hexagon