SDO HMI 2014-09-20 00:00:34 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 3.01 | 17.82 | 8.45 | 62.73 | -14.87 | 250.27 | -79.63 | 106.23 | 0.9898 | 170.7 | 62.1 | |
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back to the solar disc SDO HMI 2014-09-20 00:00:34 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 | 0.71 | 0.00 | 2.02 | -15.70 | 252.53 | -77.37 | 107.41 | 0.9853 | 167.0 | 145.2 | |
| 3.01 | 12.06 | 8.45 | 33.81 | -15.12 | 252.52 | -77.38 | 106.84 | 0.9850 | 240.3 | 206.5 | |
| 0.00 | 3.28 | 0.00 | 17.67 | -14.61 | 247.20 | -82.70 | 105.47 | 0.9963 | -123.0 | -51.8 | |
| 0.00 | 1.77 | 0.00 | 9.23 | -14.27 | 247.41 | -82.49 | 105.16 | 0.9959 | -120.0 | -134.9 | |
| 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. | |