SDO HMI 2013-10-18 16:59:00 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 4.97 | 32.68 | 7.89 | 51.31 | -22.44 | 155.97 | 67.27 | 244.05 | 0.9490 | 392.3 | 33.2 | |
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back to the solar disc SDO HMI 2013-10-18 16:59:00 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 |
| 4.97 | 30.59 | 7.89 | 48.94 | -22.50 | 156.35 | 67.65 | 244.09 | 0.9513 | 501.0 | 37.1 | |
| 0.00 | 0.87 | 0.00 | 1.03 | -21.46 | 149.28 | 60.59 | 243.25 | 0.9096 | 396.0 | 411.8 | |
| 0.00 | 1.22 | 0.00 | 1.34 | -20.88 | 147.17 | 58.48 | 243.21 | 0.8942 | -469.0 | -379.5 | |
| 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. | |