What does this number measure?
One of Jupiter's small inner moons. The displayed diameter is that of a sphere of equivalent volume, calculated from the mean radius published by NASA/JPL; this moon's real shape is irregular.
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 value: a source is provided, but the measurement has not been individually audited in this project.
Uncertainty stated in the catalogue: about 8 km.
Shape and major terrain features inspired by Galileo; details interpreted. Volume-equivalent diameter, not maximum axis.