Solar Section        


June 5, 2019

A Short Summary of Carrington Rotation 2217

Carrington Rotation CR2217 covered the time period from 2019-05-06 0118 UT – 2019-06-02 0629 UT.
354 Images/Observations were submitted for the archives. The submissions can be viewed in ALPO’s Solar Archive for CR2217:
The rotation brought us 2 active regions, AR2740, and AR2741, as well as 1 spotless streak of 14 days. The highest Daily Active Region Area for the rotation was 410 millionths on May 8, while the total active region areas for the rotation was 3040 millionths. The highest Wolf number for the rotation 27, was also on May 8. The Rotation also continued the transition from C24 to C25 with a small number of reverse polarized areas of which the most recent one was on May 29. See our overview with the last updates of these reverse polarized areas for this rotation by clicking here. Overall Solar Activity remained Very Low and the rotation increased the spotless days count since solar maximum to 453, which brings the total spotless days for Cycle 24 so far to 806. Despite this, the Sun produced 2 A-class, 28 B-class and 11 C-class flares during the rotation.
Last time we featured some images of new observers submitting images to our archive, and this time we would like to feature some drawings submitted by our new observers, Nelly-Hendrik de Bakker and Ivo Demeulenaere, as well as a longtime veteran observer from the UK, Anthony Broxton. Please click the thumbnails below to see the full drawing. 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 CR2217.
Clear Skies,
Theo Ramakers
Assistant Coordinator, the ALPOSS

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