page_title: Summer Triangle
hierarchical_section_title: Summer Triangle
caption_attribution_description: English: Summer Triangle Français&#160;: Le triangle d'été. Full Sky logo
context_page_description: The Summer Triangle is an astronomical asterism in the northern celestial hemisphere. The defining vertices of this imaginary triangle are at Altair, Deneb, and Vega, each of which is the brightest star of its constellation.
context_section_description: The Summer Triangle is an astronomical asterism in the northern celestial hemisphere. The defining vertices of this imaginary triangle are at Altair, Deneb, and Vega, each of which is the brightest star of its constellation (Aquila, Cygnus, and Lyra, respectively).
caption: The Summer Triangle mapped on a star chart
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