Sunspot drawing of 1987-4-15

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https://doi.org/10.7891/e-manuscripta-142800



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1987-04-15
07:15
Hs 1304.6:1878
https://doi.org/10.7891/e-manuscripta-142800
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
25 4 6 C -24 180
26 23 26 D -32 129
27 3 5 B -32 137
29 6 9 C -7 125
32 5 7 J 23 73
33 9 10 B -17 109
6 50 63