Sunspot drawing of 1987-5-10

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https://doi.org/10.7891/e-manuscripta-143064



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1987-05-10
07:30
Hs 1304.6:1902
https://doi.org/10.7891/e-manuscripta-143064
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
42 11 16 D -31 119
43 2 3 A -20 84
2 13 19