SDO HMI 2011-07-20 19:13:26 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 31.20 | 166.77 | 21.94 | 117.20 | 16.80 | 169.05 | 44.47 | 288.99 | 0.7116 | -817.2 | -260.8 | |
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back to the solar disc SDO HMI 2011-07-20 19:13:26 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 |
| 31.20 | 162.96 | 21.94 | 114.59 | 16.70 | 169.11 | 44.53 | 288.82 | 0.7120 | -1007.6 | -281.1 | |
| 0.00 | 1.00 | 0.00 | 0.68 | 18.75 | 166.73 | 42.15 | 292.36 | 0.6894 | 505.0 | 433.5 | |
| 0.00 | 1.18 | 0.00 | 0.81 | 21.97 | 166.10 | 41.52 | 297.10 | 0.6928 | 607.0 | 468.4 | |
| 0.00 | 1.63 | 0.00 | 1.12 | 22.63 | 165.95 | 41.36 | 298.06 | 0.6935 | 614.0 | 470.7 | |
| 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. | |