Sunspot drawing of 2017-12-24

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https://doi.org/10.7891/e-manuscripta-159655



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2017-12-24
11:30
Hs 1304.6:11119
https://doi.org/10.7891/e-manuscripta-159655
Observer : Andrea Manna
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
93 18 24 E 16.7 87.9
94 2 3 A -9.5 95.0
2 20 27