| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 6.93 | 0.00 | 4.37 | -23.82 | 141.41 | 23.11 | 215.87 | 0.6198 | 669.1 | 565.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-17 11:59:09 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 | 0.90 | 0.00 | 0.54 | -16.34 | 144.27 | 25.97 | 227.84 | 0.5691 | 742.0 | 584.3 | |
| 0.00 | 0.81 | 0.00 | 0.52 | -24.57 | 142.78 | 24.48 | 216.47 | 0.6364 | 525.0 | 518.8 | |
| 0.00 | 0.63 | 0.00 | 0.40 | -24.60 | 142.64 | 24.34 | 216.28 | 0.6355 | 575.0 | 480.4 | |
| 0.00 | 0.90 | 0.00 | 0.58 | -24.42 | 142.57 | 24.27 | 216.39 | 0.6331 | 784.0 | 647.1 | |
| 0.00 | 0.81 | 0.00 | 0.49 | -20.82 | 141.51 | 23.21 | 219.07 | 0.5866 | 635.0 | 525.0 | |
| 0.00 | 1.53 | 0.00 | 0.99 | -25.50 | 142.06 | 23.76 | 214.75 | 0.6403 | 719.0 | 585.0 | |
| 0.00 | 1.35 | 0.00 | 0.85 | -27.12 | 136.56 | 18.26 | 206.81 | 0.6205 | 704.0 | 568.3 | |
| 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. | |