Sunspot drawing of 1987-11-18

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https://doi.org/10.7891/e-manuscripta-142816



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1987-11-18
08:45
Hs 1304.6:2060
https://doi.org/10.7891/e-manuscripta-142816
Observer : Sergio Cortesi
Seeing (SIDC) : 1
Group Not Weighted Weighted Type Latitude Carrington Longit.
134 7 30 D -24 117
135 5 20 D -22 58
2 12 50