Sunspot drawing of 1987-5-9

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https://doi.org/10.7891/e-manuscripta-142866



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1987-05-09
07:30
Hs 1304.6:1901
https://doi.org/10.7891/e-manuscripta-142866
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
42 14 16 D -31 120
1 14 16