SDO HMI 2011-08-20 15:59:09 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 9.98 | 31.21 | 17.22 | 54.50 | 19.09 | 1.79 | -74.65 | 72.07 | 0.9591 | -315.6 | 66.5 | |
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back to the solar disc SDO HMI 2011-08-20 15:59:09 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 |
| 2.70 | 4.23 | 4.46 | 6.97 | 19.22 | 2.59 | -73.85 | 71.95 | 0.9552 | -485.8 | -380.4 | |
| 0.00 | 4.05 | 0.00 | 6.68 | 18.87 | 2.55 | -73.89 | 72.32 | 0.9555 | -530.0 | -441.1 | |
| 7.28 | 22.93 | 12.76 | 40.85 | 19.10 | 1.53 | -74.91 | 72.05 | 0.9603 | -239.4 | 227.3 | |
| 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. | |