SDO HMI 2013-09-17 09:59:05 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 9.32 | 43.42 | 47.26 | 231.60 | -17.60 | 59.81 | -81.78 | 108.57 | 0.9956 | -148.8 | -11.9 | |
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back to the solar disc SDO HMI 2013-09-17 09:59:05 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 |
| 3.55 | 43.42 | 16.88 | 231.60 | -17.61 | 60.36 | -81.23 | 108.67 | 0.9948 | 237.4 | -11.9 | |
| 2.31 | -1.00 | 12.14 | -1.00 | -17.87 | 59.54 | -82.06 | 108.80 | 0.9961 | -273.7 | 999999 | |
| 3.46 | -1.00 | 18.24 | -1.00 | -17.40 | 59.47 | -82.12 | 108.32 | 0.9961 | -423.1 | 999999 | |
| 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. | |