Star lore
Corona Borealis
Direct answer
Corona Borealis is a small northern constellation forming a clear semicircle known as the Northern Crown.
Corona Borealis is the Northern Crown, a graceful spring and summer arc centered on Alphecca.
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At a glance
- Found in
- Constellations & Star Lore
- Related
- Coma Berenices, Corona Australis, Corvus, Crater
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The story behind Corona Borealis
Corona Borealis was included in Ptolemy's catalogue and has retained its crown identity for many centuries.
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Why Corona Borealis matters
Corona Borealis’s compact shape is one of the easiest examples of a traditional figure that closely matches a naked-eye star pattern.
How to read Corona Borealis
Find the crown between Boötes and Hercules, with bright Alphecca set in the middle of the arc.
Corona Borealis in practice: an example
T Coronae Borealis is a recurrent nova in the region, but it is normally far fainter than the crown's named stars.
Where readings of Corona Borealis go wrong
A nova's changing visibility must be checked from current observations rather than an evergreen constellation page.
Sources and editorial method
Research references used for this entry include:
- International Astronomical Union: The Constellations - Official names, abbreviations, and boundaries for the 88 modern constellations.
- NASA Space Place: What Are Constellations? - NASA introduction to constellation regions, patterns, visibility, and seasonal sky changes.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Last updated
- 2026-09-26
Set the Northern Crown between Herdsman and Hero
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Common questions
What is Corona Borealis?
Corona Borealis is a small northern constellation forming a clear semicircle known as the Northern Crown.
What do people get wrong about Corona Borealis?
A nova's changing visibility must be checked from current observations rather than an evergreen constellation page.
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