group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
46.41 | 254.01 | 24.80 | 135.67 | 14.88 | 255.30 | 4.10 | 349.32 | 0.3750 | -1070.1 | -371.0 |
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back to the solar disc SDO HMI 2013-03-29 17:59:01 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 |
0.00 | 1.14 | 0.00 | 0.59 | 9.16 | 256.40 | 5.20 | 341.81 | 0.2877 | -713.0 | -547.7 | |
26.97 | 241.23 | 14.41 | 128.91 | 14.88 | 255.68 | 4.48 | 348.37 | 0.3760 | -1254.5 | -374.1 | |
0.00 | 1.75 | 0.00 | 0.92 | 12.99 | 255.36 | 4.16 | 348.11 | 0.3447 | -1053.0 | -848.9 | |
19.44 | -2.00 | 10.39 | -2.00 | 15.06 | 254.97 | 3.77 | 350.27 | 0.3769 | -1286.2 | 999999 | |
0.00 | 1.58 | 0.00 | 0.83 | 12.10 | 254.80 | 3.59 | 349.20 | 0.3285 | -810.0 | -752.6 | |
0.00 | 1.40 | 0.00 | 0.74 | 12.38 | 254.59 | 3.38 | 349.97 | 0.3325 | -998.0 | -794.0 | |
0.00 | 1.66 | 0.00 | 0.88 | 12.92 | 254.44 | 3.24 | 350.67 | 0.3408 | -936.0 | -788.9 | |
0.00 | 0.79 | 0.00 | 0.41 | 12.50 | 253.91 | 2.71 | 351.99 | 0.3328 | -931.0 | -741.7 | |
0.00 | 0.61 | 0.00 | 0.32 | 12.28 | 253.76 | 2.55 | 352.36 | 0.3288 | -926.0 | -744.7 | |
0.00 | 1.49 | 0.00 | 0.79 | 15.05 | 251.50 | 0.29 | 359.23 | 0.3716 | 939.0 | 844.1 | |
0.00 | 2.36 | 0.00 | 1.28 | 17.30 | 251.06 | -0.14 | 0.33 | 0.4077 | 700.0 | 537.5 |
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. |