Solar Section        

 
 

January 28, 2019

A Short Summary of Carrington Rotation 2212

Carrington Rotation 2212 covered the time period from 2019-12-20 1152 UT – 2019-01-16 1954 UT .
217 Images/Observations were submitted for the archives. The submissions can be viewed in ALPO’s Solar Archive for CR2212:

http://alpo-astronomy.org/gallery3/index.php/Solar-Observations-Archive/SolarImages2018/CR2212

The rotation showed one Active Region, AR2732, which lasted for 6 days. For 21 days no sunspots were observed. The highest Daily Active Region Area for the rotation was 90 millionths on January 4 while the total active region areas for the rotation was only 200 millionths. The highest Wolf number for the rotation was 16 also on January 4. Two small areas showing Cycle 25 polarization could be seen on December 27 in Eskildsen’s CaK images at a latitude of North 46 degrees as well as on January 2nd at a latitude of South 28. Because of their sizes, the regions were not named. Overall Solar Activity remained Very Low and the rotation ended with Spotless Day 374, one C-class and 10 B-class flares.

This time we would like to feature some images submitted by three of our observers, Dave Tyler’s close up of AR2732, as well as Guilherme Grassman and Howard Eskildsen’s CaK images. Please click the thumbnails below to see the full images. Thanks to all contributors for another great rotation. Please take a look at all the drawings/images by clicking on the link above which will bring you to our archive for CR2212.
Clear Skies,
Theo Ramakers
Assistant Coordinator, the ALPOSS

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