SDO HMI 2011-02-20 20:58:57 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.37 | 23.77 | 6.41 | 131.82 | -19.10 | 32.40 | 86.94 | 251.34 | 0.9959 | 229.8 | 75.8 | |
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back to the solar disc SDO HMI 2011-02-20 20:58:57 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 |
| 0.00 | 4.46 | 0.00 | 44.02 | -18.28 | 34.72 | 89.26 | 251.93 | 0.9989 | -4.0 | 58.4 | |
| 0.00 | 11.33 | 0.00 | 54.92 | -18.87 | 31.49 | 86.03 | 251.66 | 0.9950 | 29.0 | 53.9 | |
| 1.37 | 5.32 | 6.41 | 24.28 | -20.31 | 31.60 | 86.14 | 250.21 | 0.9949 | 444.6 | 261.0 | |
| 0.00 | 0.69 | 0.00 | 1.93 | -20.53 | 27.11 | 81.66 | 250.32 | 0.9849 | -363.0 | -361.6 | |
| 0.00 | 1.97 | 0.00 | 6.67 | -21.49 | 29.00 | 83.55 | 249.23 | 0.9896 | -120.0 | 0.4 | |
| 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. | |