Sunspot drawing of 1987-9-28

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https://doi.org/10.7891/e-manuscripta-142968



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1987-09-28
07:30
Hs 1304.6:2029
https://doi.org/10.7891/e-manuscripta-142968
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
101 1 3 J 14 134
104 5 6 B -26 142
105 2 1 A -21 355
3 8 10