Sunspot drawing of 1987-1-17

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https://doi.org/10.7891/e-manuscripta-142846



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1987-01-17
08:45
Hs 1304.6:1807
https://doi.org/10.7891/e-manuscripta-142846
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
4 1 1 A -25 135
1 1 1