SDO HMI 2011-08-21 23:59:09 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 19.96 | 42.43 | 17.93 | 38.24 | 18.78 | 1.81 | -56.99 | 72.05 | 0.8366 | -651.9 | -228.6 | |
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back to the solar disc SDO HMI 2011-08-21 23:59:09 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 | 1.35 | 0.00 | 1.13 | 16.50 | 4.75 | -54.05 | 74.58 | 0.8074 | -371.0 | -322.9 | |
| 9.26 | 15.01 | 8.21 | 13.30 | 18.88 | 2.35 | -56.45 | 71.88 | 0.8318 | -729.9 | -635.5 | |
| 0.00 | 0.54 | 0.00 | 0.49 | 20.23 | 1.31 | -57.49 | 70.35 | 0.8423 | -567.0 | -471.8 | |
| 10.70 | 24.45 | 9.72 | 22.32 | 18.88 | 1.41 | -57.39 | 71.95 | 0.8404 | -643.9 | -36.0 | |
| 0.00 | 1.08 | 0.00 | 1.00 | 16.90 | 0.50 | -58.30 | 74.36 | 0.8474 | -455.0 | -359.7 | |
| 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. | |