groupProj. UProj. WSCorr. UCorr. WS BLLCMPos. angler MU MP

11474 0.54 15.93 0.28 8.49 15.40 228.40 9.56 333.75 0.3718 110.4 107.6


previous   or   next   observation for the same group / back to the solar disc

SDO HMI 2012-05-08 20:59:08 UT

No observation available
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing)
(It is recommended to set high resolution on your display!)


spotProj. UProj. WSCorr. UCorr. WSBLLCMPos. angler MU MP

1 0.00 0.98 0.00 0.54 13.36 239.41 20.57 309.67 0.4459 -608.0 -504.4
2 0.00 1.61 0.00 0.87 13.19 235.49 16.65 315.30 0.3982 -784.0 -598.6
3 0.00 1.07 0.00 0.57 11.20 234.97 16.13 312.36 0.3705 722.0 543.8
4 0.00 0.90 0.00 0.48 12.96 233.34 14.51 318.79 0.3721 -739.0 -535.5
5 0.54 2.24 0.28 1.18 13.70 229.75 10.91 327.79 0.3465 -905.3 -737.1
6 0.00 0.98 0.00 0.52 15.56 227.74 8.90 335.23 0.3573 -589.0 -493.1
7 0.00 2.06 0.00 1.09 15.80 225.56 6.72 341.01 0.3476 858.0 618.7
8 0.00 1.88 0.00 0.99 16.02 225.57 6.73 341.21 0.3511 932.0 601.5
9 0.00 0.90 0.00 0.48 18.82 223.20 4.36 349.19 0.3854 643.0 528.4
10 0.00 1.43 0.00 0.77 18.60 223.13 4.29 349.24 0.3815 707.0 545.5
11 0.00 0.81 0.00 0.43 19.51 222.86 4.02 350.32 0.3953 647.0 516.7
12 0.00 1.07 0.00 0.57 18.13 220.22 1.38 356.42 0.3681 725.0 657.2


  • Proj. U -  Projected umbra area in millionths of solar disc, negative values indicate
    that the umbra consists of fragmented regions which cannot be separated without losing umbral area.
    In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that
    the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2.
  • Proj. WS -  Projected whole spot area in millionths of solar disc, negative values indicate
    that several umbras have a common penumbra, e.g. -7 means that the given umbra shares
    a penumbra with umbra No.7, and the WS value is indicated at No.7.
  • Corr. U -  Corrected umbra area in millionths of solar hemisphere, for negative values see above
  • Corr. WS -  Corrected whole spot area in millionths of solar hemisphere, for negative values see above
  • B -  Heliographic latitude B; positive: North, negative: South
  • L -  Heliographic longitude L
  • LCM -  Longitudinal distance from the Sun's central meridian
  • Pos. angle -  Position angle
  • r -  Distance from the centre of Sun's disc in terms of Sun's radius
  • MU -  Mean magnetic field within the umbra contour averaged the pixel values with sign.
  • MP -  Mean magnetic field within the penumbra contour averaged the pixel values with sign.