| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 4.69 | 9.38 | 3.08 | 6.28 | 19.87 | 239.97 | 41.26 | 292.72 | 0.6740 | 337.4 | 185.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-11 09:59:10 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 | 0.63 | 0.00 | 0.47 | 18.42 | 246.86 | 48.14 | 288.99 | 0.7496 | -535.0 | -479.3 | |
| 0.00 | 1.26 | 0.00 | 0.89 | 18.58 | 243.68 | 44.97 | 289.83 | 0.7144 | -364.0 | -414.6 | |
| 0.00 | 0.90 | 0.00 | 0.61 | 21.72 | 240.22 | 41.51 | 295.21 | 0.6828 | 649.0 | 529.7 | |
| 1.44 | 2.98 | 0.95 | 1.95 | 19.39 | 238.69 | 39.98 | 292.33 | 0.6574 | 727.1 | 720.0 | |
| 3.25 | 3.61 | 2.13 | 2.36 | 20.56 | 238.20 | 39.49 | 294.24 | 0.6552 | 756.1 | 607.0 | |
| Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
|
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. |
||
| Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
|
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. |
||
| 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. | |