SDO HMI 2011-07-23 11:59:11 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.54 | 3.72 | 1.04 | 2.48 | 5.62 | 46.84 | -42.06 | 87.23 | 0.6697 | -560.2 | -457.2 | |
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back to the solar disc SDO HMI 2011-07-23 11:59:11 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 | 1.18 | 0.00 | 0.78 | 5.43 | 47.33 | -41.57 | 87.53 | 0.6634 | -555.0 | -445.5 | |
| 0.00 | 1.00 | 0.00 | 0.66 | 5.24 | 47.27 | -41.63 | 87.81 | 0.6643 | -614.0 | -470.9 | |
| 1.54 | 1.54 | 1.04 | 1.04 | 6.00 | 46.20 | -42.70 | 86.64 | 0.6778 | -513.4 | 0.0 | |
| 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. | |