SDO HMI 2011-10-21 12:59:01 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 26.12 | 160.09 | 46.37 | 285.80 | 27.62 | 54.13 | 74.49 | 297.23 | 0.9615 | -314.3 | -28.9 | |
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back to the solar disc SDO HMI 2011-10-21 12:59:01 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 |
| 7.75 | 158.87 | 14.04 | 283.91 | 27.58 | 54.46 | 74.82 | 297.18 | 0.9628 | 530.2 | -27.6 | |
| 18.37 | -1.00 | 32.33 | -1.00 | 27.62 | 54.02 | 74.38 | 297.23 | 0.9610 | -684.5 | 999999 | |
| 0.00 | 1.22 | 0.00 | 1.89 | 29.07 | 51.30 | 71.67 | 298.89 | 0.9491 | -205.0 | -187.1 | |
| 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. | |