Arcturus

Great Diamond

great diamond,great diamond of virgo,diamond of virgo

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 … [Read more…]

Spring Triangle

spring triangle stars,denebola,regulus,arcturus,spica

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 … [Read more…]

Comet Catalina

comet catalina, C/2013 US10

Comet Catalina (C/2013 US10) is a comet from the Oort Cloud currently making its first and only visit to the inner solar system. The comet was first discovered on October 31, 2013 by the Catalina Sky Survey using a 27-inch Schmidt-Cassegrain telescope. At the time of discovery, it had an apparent magnitude of 19. Since … [Read more…]

Quadrantids

quadrans muralis,quadrantids meteor shower

The Quadrantids are an annual meteor shower occurring in the first week of January. Quadrantid meteors can be seen from January 1 to 6 and the shower usually peaks on January 3 with a zenithal hourly rate of up to 120 meteors. The Quadrantid meteor shower is best seen from the northern hemisphere, but can … [Read more…]