SDO HMI 2011-08-30 20:59:08 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 18.17 | 34.20 | 16.88 | 31.54 | 18.29 | 359.65 | 58.11 | 287.16 | 0.8457 | -500.9 | -285.9 | |
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back to the solar disc SDO HMI 2011-08-30 20:59:08 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 |
| 18.17 | 29.90 | 16.88 | 27.77 | 18.33 | 359.92 | 58.38 | 287.19 | 0.8481 | -683.7 | -479.8 | |
| 0.00 | 0.45 | 0.00 | 0.39 | 17.63 | 357.90 | 56.35 | 286.48 | 0.8295 | 423.0 | 318.8 | |
| 0.00 | 1.79 | 0.00 | 1.57 | 17.60 | 357.59 | 56.05 | 286.46 | 0.8266 | 567.0 | 459.0 | |
| 0.00 | 0.81 | 0.00 | 0.72 | 19.40 | 358.45 | 56.91 | 288.56 | 0.8357 | -462.0 | -464.8 | |
| 0.00 | 1.25 | 0.00 | 1.09 | 17.89 | 357.22 | 55.67 | 286.83 | 0.8233 | 554.0 | 480.4 | |
| 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. | |