Sunspot drawing of 1987-12-12

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https://doi.org/10.7891/e-manuscripta-142946



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1987-12-12
08:45
Hs 1304.6:2075
https://doi.org/10.7891/e-manuscripta-142946
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
145 1 1 A 28 206
1 1 1