2713
Beta
2715
Beta-Delta
86
86
  • Area = 8
  • Zurich = D
  • Penumbra = small symmetric (s) north to south diameter < 2.5
  • Leading = 4
  • NN = 7
88
88
  • Area = 21
  • Zurich = H
  • Penumbra = large symmetric (h) north to south diameter > 2.5
  • Leading =
  • NN = 23

Catania sunspot groups
2018-06-22 06:06:00
NOAA AR/sunspot
NOAA Halpha plage
NOAA expected region
2018-06-24 00:30:00
PROBA2/SWAP 17.4nm
2018-06-24T20:29:47.864