SDO HMI 2011-10-20 19:59:01 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 41.43 | 226.61 | 50.25 | 274.91 | 27.66 | 54.52 | 65.55 | 297.91 | 0.9142 | -588.9 | -144.8 | |
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back to the solar disc SDO HMI 2011-10-20 19:59:01 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 |
| 7.83 | 224.34 | 9.66 | 272.58 | 27.69 | 55.07 | 66.11 | 297.89 | 0.9177 | 327.5 | -144.0 | |
| 33.60 | -1.00 | 40.59 | -1.00 | 27.65 | 54.44 | 65.47 | 297.91 | 0.9137 | -833.4 | 999999 | |
| 0.00 | 0.87 | 0.00 | 0.96 | 27.25 | 51.60 | 62.64 | 297.84 | 0.8947 | -522.0 | -425.7 | |
| 0.00 | 0.70 | 0.00 | 0.72 | 27.67 | 49.30 | 60.34 | 298.65 | 0.8790 | -439.0 | -366.5 | |
| 0.00 | 0.70 | 0.00 | 0.65 | 27.83 | 45.55 | 56.58 | 299.54 | 0.8505 | 264.0 | 247.2 | |
| 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. | |