SDO HMI 2011-02-28 13:58:58 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 9.22 | 26.98 | 5.07 | 14.92 | -22.46 | 181.56 | -22.40 | 127.72 | 0.4464 | 318.6 | 113.5 | |
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back to the solar disc SDO HMI 2011-02-28 13:58:58 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 | 3.02 | 0.00 | 1.61 | -20.11 | 185.44 | -18.52 | 127.59 | 0.3780 | 667.0 | 541.5 | |
| 7.15 | 8.36 | 3.90 | 4.56 | -21.64 | 183.17 | -20.79 | 127.93 | 0.4200 | 898.9 | 757.8 | |
| 0.00 | 1.21 | 0.00 | 0.67 | -23.89 | 182.24 | -21.71 | 131.14 | 0.4509 | 816.0 | 645.1 | |
| 0.00 | 1.64 | 0.00 | 0.92 | -23.37 | 180.30 | -23.65 | 128.05 | 0.4696 | -718.0 | -535.7 | |
| 0.60 | 5.17 | 0.34 | 2.88 | -22.22 | 180.37 | -23.58 | 126.00 | 0.4596 | 784.3 | 629.8 | |
| 1.47 | 6.12 | 0.83 | 3.45 | -23.95 | 179.41 | -24.55 | 128.18 | 0.4850 | -795.6 | -512.4 | |
| 0.00 | 0.60 | 0.00 | 0.34 | -22.75 | 179.64 | -24.31 | 126.25 | 0.4727 | -408.0 | -419.1 | |
| 0.00 | 0.86 | 0.00 | 0.49 | -24.79 | 178.69 | -25.26 | 128.94 | 0.5002 | -726.0 | -624.4 | |
| 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. | |