SDO HMI 2014-07-20 21:00:40 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.27 | 8.07 | 0.73 | 4.64 | 16.84 | 86.24 | 28.53 | 295.47 | 0.5083 | -236.2 | -450.0 | |
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back to the solar disc SDO HMI 2014-07-20 21:00:40 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 | 4.17 | 0.00 | 2.42 | 16.99 | 87.10 | 29.39 | 295.18 | 0.5207 | -680.0 | -639.0 | |
| 1.27 | 2.63 | 0.73 | 1.51 | 16.50 | 86.07 | 28.36 | 294.92 | 0.5043 | -948.9 | -744.6 | |
| 0.00 | 1.27 | 0.00 | 0.71 | 17.03 | 83.68 | 25.98 | 297.62 | 0.4746 | 728.0 | 511.9 | |
| 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. | |