How small is Pasithee?

Putting a two-kilometre moon in perspective.

Published 2026-10-23

Pasithee is about 2 km across.^[1] NASA gives a mean radius of about 1 km.^[2]

Too small to be round

None of the Carme-group moons is massive enough to pull itself into a sphere.^[2]

A long way out

It orbits at an average of about 22.8 million km from Jupiter — roughly twelve times farther than Callisto.^[3]

Seen at all?

Such tiny moons can only be found with large telescopes and sensitive cameras.^[5]

Numbered citations link to the sources list on the Pasithee overview page.