Sunspot drawing of 1987-1-22

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https://doi.org/10.7891/e-manuscripta-142969



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1987-01-22
08:30
Hs 1304.6:1812
https://doi.org/10.7891/e-manuscripta-142969
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
4A 17 24 B -25 126
1 17 24