SDO HMI 2011-08-25 11:59:09 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.26 | 7.46 | 0.73 | 4.32 | -18.35 | 354.50 | -18.08 | 145.19 | 0.5176 | 14.0 | 105.9 | |
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back to the solar disc SDO HMI 2011-08-25 11:59:09 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 | 1.89 | 0.00 | 1.08 | -18.43 | 356.69 | -15.88 | 148.61 | 0.5004 | 914.0 | 694.4 | |
| 0.00 | 1.44 | 0.00 | 0.83 | -18.31 | 354.80 | -17.77 | 145.54 | 0.5142 | -834.0 | -650.6 | |
| 1.26 | 2.96 | 0.73 | 1.73 | -18.53 | 353.40 | -19.18 | 143.76 | 0.5290 | 782.7 | 547.9 | |
| 0.00 | 1.17 | 0.00 | 0.68 | -17.79 | 353.45 | -19.13 | 142.95 | 0.5199 | -599.0 | -554.6 | |
| 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. | |