SDO HMI 2011-10-28 19:59:00 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.21 | 5.63 | 0.68 | 3.16 | -19.39 | 257.85 | 14.38 | 209.93 | 0.4718 | 145.8 | 252.8 | |
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back to the solar disc SDO HMI 2011-10-28 19:59:00 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 | 1.82 | 0.00 | 1.03 | -19.16 | 259.66 | 16.19 | 213.23 | 0.4827 | 943.0 | 744.2 | |
| 0.00 | 1.21 | 0.00 | 0.68 | -18.48 | 258.45 | 14.99 | 212.05 | 0.4641 | -683.0 | -502.6 | |
| 0.00 | 1.04 | 0.00 | 0.58 | -19.66 | 257.28 | 13.82 | 208.70 | 0.4705 | 845.0 | 646.5 | |
| 1.21 | 1.56 | 0.68 | 0.87 | -20.18 | 255.61 | 12.14 | 205.19 | 0.4658 | -836.0 | -895.0 | |
| 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. | |