Sunspot drawing of 1981-8-21

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https://doi.org/10.7891/e-manuscripta-139379



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1981-08-21
06:30
Hs 1304.6:202
https://doi.org/10.7891/e-manuscripta-139379
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
391 25 42 E -15 8
398 18 16 C -7 341
400 6 5 J -2 325
401 5 15 G -16 323
404 8 8 B -6 331
404A 6 5 B -8 319
405 3 6 B 12 46
406 18 18 C 10 309
407 13 21 D -8 295
408 20 21 C -12 283
409 2 2 A -13 293
410 6 9 B -8 266
411 2 1 A -21 317
412 1 2 A 17 304
413 1 2 A 11 274
414 4 9 D 21 247
415 4 6 C -6 250
17 142 188