group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
21.12 | 45.24 | 13.02 | 27.85 | 14.43 | 301.23 | -36.14 | 74.38 | 0.5952 | -39.2 | -153.3 |
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back to the solar disc SDO HMI 2010-08-11 07:59:10 UT ![]() 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!) |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
10.02 | 16.16 | 6.06 | 9.79 | 13.98 | 302.58 | -34.79 | 74.78 | 0.5759 | -892.8 | -48.2 | |
0.99 | -1.00 | 0.60 | -1.00 | 14.02 | 302.27 | -35.10 | 74.79 | 0.5803 | -529.4 | 999999 | |
0.00 | 11.65 | 0.00 | 7.15 | 14.37 | 301.43 | -35.93 | 74.41 | 0.5924 | -592.0 | -581.7 | |
0.00 | 1.35 | 0.00 | 0.84 | 14.43 | 300.99 | -36.38 | 74.42 | 0.5985 | -440.0 | -313.1 | |
0.00 | 2.53 | 0.00 | 1.56 | 13.33 | 300.65 | -36.72 | 76.32 | 0.6010 | 831.0 | 578.0 | |
10.11 | 13.55 | 6.36 | 8.51 | 15.18 | 299.66 | -37.71 | 73.53 | 0.6178 | 833.5 | 647.1 |
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. |
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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. |
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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. |