These pages are used for posting reports on Jupiter from 2015 onwards.

The coordinate systems used for Jupiter are complicated, and the historic convention have been superseded by different systems in professional usage.  Up to 2015, we used the historic conventions of System II longitude and south up in images.  Since then, on this web site, all our reports and maps now show north up and maps are in System III longitude, unless otherwise stated. However, we still quote drift rates in System II for historical consistency, and the equatorial region is always plotted in System I.   Latitudes are planetographic for ground-based observations but planetocentric for Juno spacecraft observations.

The previous Jupiter Section web site still exists, at:   http://www.britastro.org/jupiter/
Those pages contain a great deal of material including:
–‘Reports’ (permanent archive of our reports on previous apparitions from 2005 to 2014/15).
–‘Publications’ (including PDFs of many of them).
–‘Guides’ (several overviews of the planet) & ‘Reference Articles’:
these have been updated and superseded by the ‘BAA Guide to Jupiter…’ on the present web site.
The old web site also contains  ‘Maps of the jovian moons’.
While the old site is kept as an archive, it is no longer maintained, and links from it to other sites may be out of date.

BAA members interested in joining the Jupiter Section are invited to email the Director (John Rogers) via the BAA web site.  Email bulletins are sent out to Section members from time to time, often to notify them of items posted on this web site, or to encourage observations of specific phenomena.

We also have a Facebook page ‘BAA Jupiter Section’.