Sunspot drawing of 1973-2-19

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https://doi.org/10.7891/e-manuscripta-97511



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1973-02-19
08:45
Hs 1304.5:4987
https://doi.org/10.7891/e-manuscripta-97511
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
46 9 D -16.4 305.9
55 2 A -16.7 260.5
2 11