SDO HMI 2014-09-21 04:00:34 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 7.09 | 39.28 | 8.84 | 49.43 | -15.01 | 250.81 | -63.69 | 109.72 | 0.9208 | 329.9 | 123.9 | |
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back to the solar disc SDO HMI 2014-09-21 04:00:34 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 |
| 6.29 | 31.38 | 7.57 | 37.65 | -15.30 | 252.13 | -62.38 | 110.35 | 0.9133 | 618.6 | 304.3 | |
| 0.00 | 1.51 | 0.00 | 2.14 | -14.48 | 247.83 | -66.67 | 108.38 | 0.9384 | -408.0 | -277.6 | |
| 0.00 | 4.17 | 0.00 | 6.12 | -13.45 | 246.83 | -67.67 | 107.09 | 0.9427 | -592.0 | -499.0 | |
| 0.80 | 2.22 | 1.27 | 3.52 | -15.01 | 245.47 | -69.03 | 108.38 | 0.9518 | -83.9 | -210.9 | |
| 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. | |