| Abbreviation | Boo |
|---|---|
| Meaning | Herdsman |
| Pronunciation Guide is based on “Pronouncing Astronomical Names,” published in 1943 by the American Astronomical Society. | bo-OH-teez |
| Genitive The genitive is the Latin possessive form used in star names. For example, Alpha Orionis means “the Alpha of Orion.” | bo-OH-tis |
| Best Month | June |
| Visibility | Northern |
| Origin | AncientThese figures are rooted in the classical Greek and Mesopotamian traditions cataloged by Ptolemy in the 2nd century AD. |
| Author | PtolemyPtolemy, a 2nd-century Greco-Egyptian astronomer, cataloged the 48 classical constellations in his landmark work, the Almagest. These form the core of the 88 modern constellations recognized today. |
| Type | constellation |
| Difficulty | Easy |
| Description | The Herdsman is one of the oldest named constellations, appearing in Homer's Odyssey as a guide for navigation. He is depicted driving the Great Bear around the celestial pole — either as a ploughman with oxen or as a bear-keeper holding two hunting dogs on a leash. Some myths identify him as Arcas, son of Zeus and Callisto, or as Icarius, the first man taught to make wine by Dionysus. His brightest star, Arcturus, is the brightest star in the northern hemisphere sky and the fourth brightest overall — a brilliant orange giant just 37 light-years away and about 25 times the diameter of the Sun. Arcturus was the first star to be observed in daylight using a telescope, in 1635. |
| Meteor Shower | Quadrantids |
| Peak Month | January |
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Monthly sky charts courtesy of What's Out Tonight? — Copyright ©2026 Ken Graun. Star charts are optimized for mid-latitudes of the Northern Hemisphere. Click a chart to view or download the PDF. For guidance on using the chart, or to purchase a planisphere and astronomy books, visit kenpress.com.
Images: NOIRLab/NSF/AURA/E. Slawik · IAU and Sky & Telescope · Stellarium — Full credits →