Sunspot drawing of 1987-9-27

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https://doi.org/10.7891/e-manuscripta-142925



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1987-09-27
09:30
Hs 1304.6:2028
https://doi.org/10.7891/e-manuscripta-142925
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
101 1 3 J 14 133
104 1 2 A -26 140
2 2 5