Sunspot drawing of 1987-11-28

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https://doi.org/10.7891/e-manuscripta-142834



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1987-11-28
08:30
Hs 1304.6:2067
https://doi.org/10.7891/e-manuscripta-142834
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
135 2 2 A -20 57
1 2 2