SDO HMI 2011-04-30 04:59:07 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 15.97 | 32.37 | 14.48 | 29.62 | 15.38 | 178.48 | 54.31 | 291.39 | 0.8429 | 19.5 | -269.8 | |
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back to the solar disc SDO HMI 2011-04-30 04:59:07 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 |
| 1.25 | 3.30 | 1.20 | 3.16 | 15.52 | 180.20 | 56.03 | 291.02 | 0.8581 | -298.3 | -331.4 | |
| 6.87 | 17.30 | 6.45 | 16.22 | 15.47 | 179.45 | 55.28 | 291.19 | 0.8517 | -543.3 | -464.9 | |
| 7.85 | 10.52 | 6.83 | 9.17 | 15.22 | 176.47 | 52.30 | 291.84 | 0.8247 | 524.5 | 238.0 | |
| 0.00 | 1.25 | 0.00 | 1.07 | 15.03 | 176.00 | 51.83 | 291.78 | 0.8198 | 582.0 | 513.2 | |
| 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. | |