Sunspot drawing of 1987-12-8

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https://doi.org/10.7891/e-manuscripta-143036



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1987-12-08
14:30
Hs 1304.6:2073
https://doi.org/10.7891/e-manuscripta-143036
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
141 16 32 D -21 238
142 2 4 B 25 242
143 2 4 A -35 263
3 20 40