SDO HMI 2011-08-17 08:59:09 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 3.78 | 16.76 | 2.07 | 9.19 | -18.02 | 114.87 | -5.08 | 168.54 | 0.4296 | 203.6 | 266.4 | |
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back to the solar disc SDO HMI 2011-08-17 08:59:09 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 | 0.54 | 0.00 | 0.30 | -21.69 | 118.44 | -1.50 | 177.07 | 0.4784 | -690.0 | -581.3 | |
| 0.00 | 1.71 | 0.00 | 0.94 | -18.29 | 116.75 | -3.20 | 172.86 | 0.4279 | 925.0 | 632.6 | |
| 0.00 | 5.68 | 0.00 | 3.11 | -18.49 | 116.62 | -3.33 | 172.63 | 0.4313 | 827.0 | 710.9 | |
| 0.00 | 1.98 | 0.00 | 1.09 | -18.21 | 114.28 | -5.67 | 167.45 | 0.4333 | -640.0 | -479.6 | |
| 0.00 | 1.80 | 0.00 | 0.99 | -17.66 | 113.50 | -6.45 | 165.45 | 0.4276 | -883.0 | -671.8 | |
| 3.78 | 5.05 | 2.07 | 2.76 | -17.04 | 112.59 | -7.35 | 163.07 | 0.4221 | 918.2 | 656.4 | |
| 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. | |