SDO HMI 2014-09-20 13:00:34 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 7.89 | 53.53 | 23.46 | 268.35 | -11.14 | 240.29 | -82.48 | 102.05 | 0.9939 | 226.6 | -189.6 | |
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back to the solar disc SDO HMI 2014-09-20 13:00:34 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 | 13.83 | 0.00 | 49.53 | -11.09 | 242.47 | -80.30 | 102.32 | 0.9907 | 335.0 | 110.1 | |
| 7.89 | 24.19 | 23.46 | 72.85 | -9.54 | 243.73 | -79.04 | 100.96 | 0.9869 | 249.9 | 127.2 | |
| 0.00 | 15.51 | 0.00 | 145.97 | -11.95 | 237.84 | -84.93 | 102.50 | 0.9985 | -428.0 | -398.5 | |
| 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. | |