Quadrantids

Quadrantids [kwä′dran·tidz]

(astronomy)

A meteor shower whose radiant-right ascension of 15 hours and declination of +48° is in the constellation Boötes; velocity is 27 miles (43 kilometers) per second, and the strength is medium.

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Quadrantids 

a meteor shower with a radiant on the boundary between the constellations Bootes and Draco (on star maps in the early 19th century this region was designated by the constellation Qudrans Muralis). The Quadrantids have been known since 1839. They are observed annually at the end of December and in the beginning of January; on January 3–4, the earth passes through the dense central concentration of the Quadrantid meteor swarm in less than 24 hr. The Quadrantid meteor shower is one of the more active showers.