Page "Amalthea (moon)" Paragraph 15

From Jupiter's surface — or rather, from just above its cloudtops — Amalthea would appear very bright, shining with a magnitude of − 4. 7, similar to that of Venus from Earth.

At only 5 arcminutes across, its disc would be barely discernible and it would thus appear starlike.

Amalthea's orbital period is only slightly longer than its parent planet's day ( about 20 % in this case ), which means it would cross Jupiter's sky very slowly.

The time between moonrise and moonset would be over 29 hours.