Sunspot drawing of 1987-5-26

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https://doi.org/10.7891/e-manuscripta-142847



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1987-05-26
09:30
Hs 1304.6:1913
https://doi.org/10.7891/e-manuscripta-142847
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
47 22 33 D 29 339
50 6 7 B 23 251
2 28 40