SDO HMI 2011-08-20 12:59:09 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 4.77 | 0.00 | 3.23 | -18.42 | 113.18 | 35.08 | 233.30 | 0.6824 | -595.0 | -532.7 | |
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back to the solar disc SDO HMI 2011-08-20 12:59:09 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 | 0.81 | 0.00 | 0.55 | -18.85 | 113.47 | 35.38 | 233.00 | 0.6883 | -549.0 | -456.1 | |
| 0.00 | 0.99 | 0.00 | 0.67 | -18.46 | 113.26 | 35.17 | 233.32 | 0.6835 | -551.0 | -479.6 | |
| 0.00 | 2.07 | 0.00 | 1.40 | -18.38 | 113.09 | 34.99 | 233.28 | 0.6812 | -777.0 | -603.3 | |
| 0.00 | 0.90 | 0.00 | 0.61 | -18.08 | 113.02 | 34.92 | 233.60 | 0.6784 | -503.0 | -498.3 | |
| 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. | |