MM#009 Default Target

Max Millennium Chief Observer mmchiefobserver at gmail.com
Sat Jul 17 12:42:09 MDT 2021


Dear Collaborators,

Solar activity is at a very low level. The target NOAA 12843 remained
stable and flare-quiet since the last message as it rotated up to the
South West limb. NOAA 12842 was initially stable but appears to have
increased in complexity to a beta/C-type sunspot group while forming
an East-West magnetic polarity inversion line and producing 3 B-class
flares, including the largest since the last message (a B7.8 flare on
17-Jul-2021 at 03:01 UT). A new region emerged just East of central
meridian and rapidly developed spots in both polarities, currently
displaying at least a beta/B-type sunspot group classification. This
region is expected to be numbered as 12845 at the start of the next
UT day and has already produced 2 B-class flares (a B4.4 and a B4.7
on 17-Jul-2021 at 16:12 and 17:05 UT, respectively). This new region
becomes the target, with additional B-class activity expected and a
good chance for a C-class flare in the next 24 hours if the region
continues to emerge new flux.

The approximate position of this region on 17-Jul-2021 at 18:00 UT is:

S16W00 , ( 0", -333" )

See http://www.SolarMonitor.org for images and
http://solar.physics.montana.edu/max_millennium/ops/observing.shtml
for a description of the current Max Millennium Observing Plan.

Regards,

Shaun Bloomfield (Northumbria University)


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