Summer Triangle

Proper noun

 * 1)  A bright asterism of the northern summer sky. Its corners are the three 1st-magnitude stars Altair (α Aql), Deneb (α Cyg), and Vega (α Lyr).

Translations

 * Finnish:
 * French: Triangle d'été
 * German:
 * Italian: Triangolo Estivo
 * Japanese: 夏の大三角形
 * Russian: Ле́тне-осе́нний треуго́льник