2796
2797
Beta
66
66
  • Area = 4
  • Zurich = J
  • Penumbra = small symmetric (s) north to south diameter < 2.5
  • Leading =
  • NN = 2
67
67
  • Area = 4
  • Zurich = C
  • Penumbra = rudimentary (r)
  • Leading = 2
  • NN = 5
66
66
  • Area = 4
  • Zurich = J
  • Penumbra = small symmetric (s) north to south diameter < 2.5
  • Leading =
  • NN = 2
67
67
  • Area = 4
  • Zurich = D
  • Penumbra = rudimentary (r)
  • Leading = 5
  • NN = 5

Catania sunspot groups
2021-01-20 09:18:00
NOAA AR/sunspot
NOAA Halpha plage
NOAA expected region
2021-01-20 00:30:00
PROBA2/SWAP 17.4nm
2021-01-20T14:24:50.178