SDO HMI 2011-07-18 12:59:11 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 32.68 | 247.12 | 17.10 | 129.29 | 16.54 | 169.18 | 14.67 | 310.75 | 0.3219 | -1307.0 | -420.8 | |
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back to the solar disc SDO HMI 2011-07-18 12:59:11 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 |
| 19.97 | 247.12 | 10.45 | 129.29 | 16.57 | 169.27 | 14.76 | 310.65 | 0.3233 | -1353.5 | -420.8 | |
| 1.91 | -1.00 | 1.00 | -1.00 | 17.01 | 169.20 | 14.70 | 311.83 | 0.3271 | -741.7 | 999999 | |
| 7.44 | -1.00 | 3.89 | -1.00 | 16.27 | 169.05 | 14.54 | 310.30 | 0.3174 | -1382.1 | 999999 | |
| 1.45 | -1.00 | 0.76 | -1.00 | 16.86 | 169.03 | 14.52 | 311.79 | 0.3233 | -1019.2 | 999999 | |
| 1.91 | -1.00 | 1.00 | -1.00 | 16.61 | 168.78 | 14.27 | 311.66 | 0.3177 | -1313.6 | 999999 | |
| 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. | |