SDO HMI 2011-02-20 23:58:57 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 2.92 | 12.11 | 17.19 | 73.78 | -19.60 | 30.88 | 87.07 | 250.83 | 0.9964 | 222.5 | 132.9 | |
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back to the solar disc SDO HMI 2011-02-20 23:58:57 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 |
| 0.94 | 6.18 | 5.32 | 40.11 | -18.88 | 30.77 | 86.96 | 251.56 | 0.9964 | -91.4 | 84.9 | |
| 1.98 | 5.07 | 11.87 | 30.85 | -20.46 | 31.37 | 87.56 | 249.93 | 0.9970 | 401.5 | 286.1 | |
| 0.00 | 0.86 | 0.00 | 2.82 | -20.51 | 27.02 | 83.21 | 250.24 | 0.9889 | -232.0 | -305.1 | |
| Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
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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 | |
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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. | |