PJ24: Map of the southern circumpolar cyclones

2020-02-05 18:57 UT
Credit : NASA / JPL / SwRI / MSSS / Gerald Eichstädt / John Rogers © cc by
Submitted By : Philosophia-47

This is a composite south polar projection map of the circumpolar cyclones (CPCs), made by combining Gerald Eichstädt's single-image maps, taken over several hours as Juno departed. The altitude of Juno's passes over the southern latitudes is increasing with each orbit, so the resolution of the later-imaged sector of the map is reduced, but we can clearly see the location of greates interest -- the former gap between CPCs-1 & 2. At PJ23 it was occupied by a compact dark cyclone, apparently turning the cluster into a hexagon, but this was smaller than the five long-established CPCs and might have drifted in randomly. At PJ24, this cyclone is absent, but instead the former gap is filled by a larger, irregular cyclonic structure (a FFR). Watch this space! This is one figure from our full report on PJ24, now being posted on the Think Tank pages, and on the BAA Jupiter Section web site.