Sunspot drawing of 1987-11-17

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https://doi.org/10.7891/e-manuscripta-142829



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1987-11-17
09:30
Hs 1304.6:2059
https://doi.org/10.7891/e-manuscripta-142829
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
134 26 44 D -24 117
135 3 6 C -20 56
2 29 50