SDO HMI 2014-04-18 21:00:34 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 3.90 | 0.00 | 2.20 | 13.62 | 186.42 | -21.58 | 48.23 | 0.4805 | 715.8 | 545.6 | |
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back to the solar disc SDO HMI 2014-04-18 21:00:34 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 |
| 0.00 | 1.06 | 0.00 | 0.60 | 13.94 | 187.79 | -20.21 | 45.94 | 0.4685 | 807.0 | 599.8 | |
| 0.00 | 0.89 | 0.00 | 0.49 | 12.49 | 187.52 | -20.48 | 48.68 | 0.4567 | 766.0 | 629.5 | |
| 0.00 | 1.06 | 0.00 | 0.59 | 12.70 | 187.18 | -20.83 | 48.82 | 0.4628 | 720.0 | 508.8 | |
| 0.00 | 0.89 | 0.00 | 0.52 | 15.38 | 182.95 | -25.06 | 49.80 | 0.5368 | 570.0 | 446.0 | |
| 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. | |