SDO HMI 2011-12-15 12:58:55 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.87 | 9.02 | 0.99 | 4.75 | -17.33 | 323.70 | -10.92 | 147.71 | 0.3377 | -409.3 | -196.0 | |
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back to the solar disc SDO HMI 2011-12-15 12:58:55 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 | 2.21 | 0.00 | 1.15 | -16.12 | 326.97 | -7.65 | 154.01 | 0.2932 | 1019.0 | 729.3 | |
| 0.00 | 0.68 | 0.00 | 0.36 | -17.83 | 322.94 | -11.68 | 146.50 | 0.3508 | -597.0 | -494.4 | |
| 1.87 | 3.57 | 0.99 | 1.89 | -17.71 | 322.79 | -11.83 | 145.96 | 0.3505 | -844.0 | -568.1 | |
| 0.00 | 1.28 | 0.00 | 0.67 | -17.61 | 322.57 | -12.05 | 145.33 | 0.3513 | -815.0 | -618.4 | |
| 0.00 | 1.28 | 0.00 | 0.68 | -17.80 | 322.24 | -12.38 | 144.93 | 0.3568 | -814.0 | -688.5 | |
| 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. | |