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asterism
This term describes a visual grouping of stars that creates a recognizable shape, such as a ladle or a triangle, without possessing the official status of a constellation. It is a technical term used in astronomy to distinguish between culturally recognized patterns and the 88 formal boundaries defined by the International Astronomical Union.
In a typographic or artistic context, the word refers to a decorative arrangement of star-like symbols. This usage is far less common than the astronomical sense and typically appears in discussions of manuscript design or classical printing.
Meanings
A prominent pattern of stars that is not a formal constellation but is recognized as a distinct shape.
A group of stars that form a recognizable pattern but are not officially recognized as a constellation by the International Astronomical Union.
Examples
The Big Dipper is a well known asterism within the constellation Ursa Major.
Look up there and you can see a small asterism that looks like a diamond.
Is that a formal constellation or just an asterism?
Is that a formal constellation or just an asterism?
The Summer Triangle is an asterism formed by three bright stars from different constellations.
I wonder if ancient sailors used this specific asterism to navigate the seas.
The astronomer explained that an asterism is not an official IAU constellation.
The astronomer explained that an asterism is not an official IAU constellation.
The book cover features a delicate gold asterism as a decorative divider between chapters.
She chose a minimalist asterism for the logo to evoke a sense of cosmic wonder.