SDO HMI 2011-02-28 12:58:58 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 4.83 | 15.42 | 2.94 | 9.47 | 17.67 | 177.80 | -26.71 | 46.37 | 0.5935 | -648.0 | -555.5 | |
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back to the solar disc SDO HMI 2011-02-28 12:58:58 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 | 1.81 | 0.00 | 1.10 | 18.29 | 179.14 | -25.36 | 44.16 | 0.5860 | -683.0 | -598.1 | |
| 4.83 | 10.17 | 2.94 | 6.20 | 17.42 | 178.31 | -26.20 | 46.17 | 0.5861 | -850.2 | -605.9 | |
| 0.00 | 0.60 | 0.00 | 0.37 | 18.46 | 177.33 | -27.17 | 45.89 | 0.6055 | -770.0 | -673.6 | |
| 0.00 | 1.12 | 0.00 | 0.70 | 17.82 | 176.17 | -28.33 | 47.88 | 0.6114 | -574.0 | -418.2 | |
| 0.00 | 0.86 | 0.00 | 0.54 | 17.39 | 175.71 | -28.79 | 48.88 | 0.6124 | -590.0 | -473.3 | |
| 0.00 | 0.34 | 0.00 | 0.22 | 18.08 | 174.55 | -29.96 | 49.11 | 0.6303 | -113.0 | -188.2 | |
| 0.00 | 0.52 | 0.00 | 0.34 | 19.11 | 173.43 | -31.07 | 48.85 | 0.6500 | -563.0 | -453.5 | |
| 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. | |