What does this number measure?
A bright star in the constellation Lyra. Vega rotates rapidly and has a flattened shape. The stated diameter is representative; a perfect sphere does not reproduce this geometry.
Compare the stated dimensions
The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.
Source and limitations
Catalogue order of magnitude; a source is provided, but this measurement has not been individually audited.
Vega: illustrated model of a star flattened by rotation; darkened equator and interpreted texture, with a horizontal equatorial axis.