SDO HMI 2014-05-20 18:00:38 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 2.61 | 8.10 | 3.79 | 12.44 | -18.07 | 217.52 | 70.84 | 251.59 | 0.9477 | -51.7 | 152.5 | |
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back to the solar disc SDO HMI 2014-05-20 18:00:38 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 | 2.52 | 0.00 | 4.13 | -18.11 | 218.80 | 72.12 | 251.63 | 0.9544 | 390.0 | 188.5 | |
| 0.00 | 1.62 | 0.00 | 2.56 | -17.85 | 218.12 | 71.44 | 251.87 | 0.9509 | 366.0 | 274.2 | |
| 2.61 | 3.96 | 3.79 | 5.75 | -18.13 | 216.34 | 69.66 | 251.44 | 0.9415 | -278.4 | -82.2 | |
| 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. | |