SDO HMI 2014-04-18 23:00:34 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 4.42 | 0.00 | 2.51 | 17.80 | 189.02 | -17.88 | 36.77 | 0.4877 | -640.4 | -524.0 | |
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back to the solar disc SDO HMI 2014-04-18 23:00:34 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 | 0.97 | 0.00 | 0.53 | 15.29 | 192.25 | -14.65 | 34.94 | 0.4276 | -673.0 | -517.8 | |
| 0.00 | 0.97 | 0.00 | 0.54 | 15.47 | 191.53 | -15.37 | 35.99 | 0.4365 | -574.0 | -486.7 | |
| 0.00 | 0.97 | 0.00 | 0.56 | 20.36 | 188.87 | -18.02 | 34.06 | 0.5200 | -575.0 | -478.7 | |
| 0.00 | 0.89 | 0.00 | 0.52 | 19.21 | 185.69 | -21.21 | 39.86 | 0.5351 | -667.0 | -538.8 | |
| 0.00 | 0.62 | 0.00 | 0.36 | 18.98 | 185.51 | -21.38 | 40.38 | 0.5343 | -713.0 | -637.6 | |
| 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. | |