Sunspot drawing of 1986-7-17

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https://doi.org/10.7891/e-manuscripta-142158



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1986-07-17
07:15
Hs 1304.6:1647
https://doi.org/10.7891/e-manuscripta-142158
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
37 2 3 B -1 162
41 7 10 C 7 35
42 3 4 B -7 51
3 12 17