MMmotd September 2021

mmmotd@solar.physics.montana.edu

1 participants
29 discussions

MM#009 Default Target
by Max Millennium Chief Observer 30 Sep '21

30 Sep '21

Dear Collaborators, Solar activity continues at low levels. Both NOAA 12877 and NOAA 12880 have produced B-class flares, as well as a C1 flare each, since the last message. Both are classified as beta-gamma regions, although NOAA 12880 currently has a factor of two greater sunspot area. NOAA 12880 shall remain the target region for a further 24 hours. Additional B-level activity likely with chance for an isolated C-class flare. The position of NOAA 12880 on 30-Sep-2021 at 15:30 UT is: N29E34, ( -470", 380" ) 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, Ryan Milligan (Queen's University Belfast)

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MM#009 Default Target
by Max Millennium Chief Observer 29 Sep '21

29 Sep '21

Dear Collaborators, Solar activity continues at low levels. NOAA 12871 has continued to decay and has now been downgraded to an alpha region. NOAA 12880 in the northeast quadrant has developed significantly over the past 24 hours and has produced several B-class events as well as a C1.3 flare at 02:08 UT today. It is currently classified as a beta/C-type region and shall be the new target region with further B- and C-level activity expected. The position of NOAA 12880 on 29-Sep-2021 at 11:30 UT is: N30E47, ( -608", 409" ) 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, Ryan Milligan (Queen's University Belfast)

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MM#009 Default Target
by Max Millennium Chief Observer 28 Sep '21

28 Sep '21

Dear Collaborators, Solar activity continues at low levels. NOAA 12871 has continued to produce B-level activity as well as a C1.6 flare at 05:56 UT today. The region retains its beta-gamma configuration but has shown signs of decay since the last message. It shall remain the target region for a further 24 hours with further B-level activity likely. The position of NOAA 12871 on 28-Sep-2021 at 11:30 UT is: S27W47, ( 625", -501" ) 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, Ryan Milligan (Queen's University Belfast)

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MM#009 Default Target
by Max Millennium Chief Observer 27 Sep '21

27 Sep '21

Dear Collaborators, Solar activity has diminished slightly since the last message, with NOAA 12871 producing only B-level activity. The region has since been reclassified as a beta-gamma region and shall continue as the default target. Further B-level activity expected over the next 24 hours, with chance for an isolated C-class flare. The position of NOAA 12871 on 27-Sep-2021 at 11:30 UT is: S28W34, ( 473", -531" ) 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, Ryan Milligan (Queen's University Belfast)

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MM#009 Default Target
by Max Millennium Chief Observer 26 Sep '21

26 Sep '21

Dear Collaborators, The target region NOAA 12871 was the source of about ten B-class flares as well as two C-class flares (C1.0 and C1.7, with the latter one at 09/25/19:11 UT) in the past 24 hours. 12871 retains its beta/D-type configuration. It shows flux cancellation and also flux emergence in its northern part. Further B- and also C-class activities are expected with a light chance of an isolated low M-class flare in the next 24 hours. The position of NOAA 12871 on September 26 at 03:30 UT is: S28W15 (219", -546") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 25 Sep '21

25 Sep '21

Dear Collaborators, The target region NOAA 12871 produced a few B-class flares as well as a C1.4 at 09/25/03:27 UT. 12871 has been designated as a beta/D-type classification. Note that some new sunspots emerged from the region very close to NOAA 12871, which was numbered as NOAA 12876 (S22E02, beta/D-type). If possible, please include these two regions in your field of view. Further B- and C-class activities are expected with some chance of an isolated low M-class flare in the next few days. The position of NOAA 12871 on September 25 at 03:30 UT is: S28W01 (14", -549") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 24 Sep '21

24 Sep '21

Dear Collaborators, The target region NOAA 12871 was the source of an M1.8 flare (at 09/23/15:23 UT) and also two C-class (C1.0 and C2.9) and a few B-class flares in the past 24 hours. 12871 has been designated as a beta-gamma-delta/D-type region. More B- and C-class activities are expected with a chance of low M-class flares in the next 24 hours. The position of NOAA 12871 on September 24 at 07:30 UT is: S28E07 (-103", -549") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 22 Sep '21

22 Sep '21

Dear Collaborators, The target region NOAA 12871 is producing an ~M3 flare! It also produced the only C1.1 flare and numerous B-class flares in the past 24 hours. 12871 retains its beta-delta/D-type configuration while decreasing in the sunspot area. There appear another four regions (NOAA 12872-12875) with sunspots on the visible solar disk, which also produced a few B-class flares. Further B- and C-class events are expected with some chance of additional M-class flare in the next few days. The position of NOAA 12871 on September 23 at 03:30 UT is: S28E23 (-330", -542") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 21 Sep '21

21 Sep '21

Dear Collaborators, The largest event since the last message was a C1.8 flare at 09/21/11:43 UT produced by NOAA 12873 which had a beta/ D-type magnetic configuration. 12873 also produced another C1.1 flare and four B-class flares. The target region NOAA 12871 was the source of more than ten B-class flares as well as a C1.1 at 09/21/18:18 UT. 12871 has been designated as a Beta-Delta/ D-type region. Further B- and C-class events are expected with a chance of a low M-class flare in the next few days. The position of NOAA 12871 on September 22 at 03:30 UT is: S27E34 (-477", -518") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 21 Sep '21

21 Sep '21

Dear Collaborators, The target region NOAA 12871 was the source of numerous B-class flares (the largest one being a B6.3 at 09/20/10:38 UT) in the past 24 hours. 12871 retains its beta/D-type configuration but increases in the sunspot area and number of spots. There also emerged two regions with sunspots, numbered as NOAA 12872 (N17E40, beta/C-type) and 12873 (N26W09, beta/B-type), which were relatively flare quiet. More B-class events are expected with a chance of C-class flares from the target region in the next 24-hour period. The position of NOAA 12871 on September 21 at 03:30 UT is: S29E48 (-622", -529") 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, Ying Li (Purple Mountain Observatory)

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MMmotd September 2021