SDO HMI 2013-09-17 20:59:04 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 17.38 | 101.55 | 45.06 | 278.59 | -17.52 | 59.03 | -76.49 | 109.40 | 0.9836 | 148.3 | -12.3 | |
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back to the solar disc SDO HMI 2013-09-17 20:59:04 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 |
| 10.82 | 95.60 | 27.55 | 252.34 | -17.61 | 59.68 | -75.84 | 109.60 | 0.9820 | 489.3 | 30.0 | |
| 6.56 | -1.00 | 17.51 | -1.00 | -17.67 | 59.20 | -76.32 | 109.57 | 0.9834 | -327.8 | 999999 | |
| 0.00 | 4.97 | 0.00 | 22.22 | -16.49 | 54.47 | -81.06 | 107.59 | 0.9942 | -451.0 | -352.6 | |
| 0.00 | 0.98 | 0.00 | 4.03 | -16.15 | 54.91 | -80.62 | 107.32 | 0.9932 | -311.0 | -309.9 | |
| 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. | |