SDO HMI 2011-02-20 16:58:57 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 7.12 | 49.79 | 25.80 | 195.33 | -18.96 | 33.63 | 85.97 | 251.56 | 0.9944 | 198.1 | 92.5 | |
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back to the solar disc SDO HMI 2011-02-20 16:58:57 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 |
| 0.94 | 31.93 | 5.41 | 136.68 | -18.20 | 34.77 | 87.11 | 252.23 | 0.9967 | -126.7 | 111.0 | |
| 0.00 | 1.20 | 0.00 | 4.66 | -19.89 | 32.24 | 84.58 | 250.75 | 0.9921 | 144.0 | 208.1 | |
| 4.29 | 8.93 | 15.23 | 31.46 | -20.41 | 31.59 | 83.93 | 250.28 | 0.9907 | 472.2 | 72.8 | |
| 0.00 | 2.66 | 0.00 | 9.08 | -21.36 | 31.38 | 83.72 | 249.34 | 0.9900 | -71.0 | -10.2 | |
| 0.00 | 1.12 | 0.00 | 2.61 | -20.58 | 27.25 | 79.58 | 250.38 | 0.9785 | -389.0 | -333.8 | |
| 1.89 | 3.95 | 5.16 | 10.84 | -21.47 | 29.15 | 81.49 | 249.37 | 0.9842 | -93.9 | -13.5 | |
| 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. | |