SDO HMI 2011-04-28 14:58:21 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 4.28 | 0.00 | 2.31 | -16.95 | 124.20 | -20.92 | 123.06 | 0.4090 | 358.5 | 337.8 | |
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back to the solar disc SDO HMI 2011-04-28 14:58:21 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 | 1.16 | 0.00 | 0.62 | -17.17 | 125.45 | -19.67 | 124.93 | 0.3940 | 489.0 | 499.2 | |
| 0.00 | 1.16 | 0.00 | 0.62 | -17.39 | 125.39 | -19.73 | 125.33 | 0.3966 | 764.0 | 579.0 | |
| 0.00 | 0.98 | 0.00 | 0.53 | -16.03 | 124.30 | -20.82 | 121.05 | 0.4005 | 829.0 | 680.6 | |
| 0.00 | 0.98 | 0.00 | 0.54 | -17.09 | 121.31 | -23.81 | 120.27 | 0.4487 | -648.0 | -459.6 | |
| 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. | |