[X] My Assistant

[Gerald]

A few days ago, Juno performed her Perijove 30 (PJ 30) Jupiter flyby. A first set of JunoCam images was already downlinked to Earth.

From PJ to PJ, closest approach is gradually moving northward. The northern FFRs (folded filamentary regions) are going to be resoved better and better. At the same time, the northern spring time is going to reveal the north pole in visible light.

Here a glimpse at the northern circumpolar cyclones with the north polar cyclone just illuminated in the twilight:


Here a pair of cyclones of opposite sign presumably propelling each other slowly towards the south:


And here a storm particularly bright in methane band:

[Brian Swift]

Gerald - Nice catch of the moon on the limb of PJ30_24 you posted at https://www.missionjuno.swri.edu/junocam/processing?id=9501

[Gerald]

Gerald - Nice catch of the moon on the limb of PJ30_24 you posted at https://www.missionjuno.swri.edu/junocam/processing?id=9501

After cross-checking with "Eyes on Juno", I think that it's Callosto.

In the PJ30 outbound red lightning search sequence, there seems to be a rather faint moon. My first candidate would be Amalthea by its size and redness, but cross-checking by position data is TBD. Here a composite of six images with some of the stars identified:

I'd estimate the visual magnitude of the moonlet (marked yellow) to be well fainter than 3m. Besides the small size, the fairly large phase angle will result in a low brightness.