Sunspot drawing of 2017-8-23

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https://doi.org/10.7891/e-manuscripta-159541



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2017-08-23
07:45
Hs 1304.6:11018
https://doi.org/10.7891/e-manuscripta-159541
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
65 7 13 C 11
66 9 16 G 12
67 8 16 D 7
68 2 2 B 8
4 26 47