Vega is an eroded lunar impact crater that is located in the southeastern part of the Moon.

About one and a half crater diameters to the west is the long Vallis Rheita.

The east-northeastern section of the rim is overlain by a merged pair of small craters.

The remainder of the outer rim is round-shouldered and marked by many tiny impacts.

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Vega.