| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 9.40 | 0.00 | 5.42 | 18.13 | 357.64 | 29.12 | 294.42 | 0.5078 | -237.4 | -313.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 19:59:08 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 | 1.61 | 0.00 | 0.96 | 17.82 | 1.73 | 33.21 | 291.45 | 0.5624 | -799.0 | -623.1 | |
| 0.00 | 1.16 | 0.00 | 0.70 | 18.07 | 1.71 | 33.19 | 291.89 | 0.5630 | -570.0 | -497.2 | |
| 0.00 | 1.08 | 0.00 | 0.63 | 18.34 | 359.36 | 30.84 | 293.46 | 0.5325 | -795.0 | -723.8 | |
| 0.00 | 1.61 | 0.00 | 0.94 | 18.99 | 359.41 | 30.90 | 294.60 | 0.5361 | -725.0 | -652.2 | |
| 0.00 | 1.16 | 0.00 | 0.68 | 19.03 | 359.20 | 30.68 | 294.79 | 0.5334 | -938.0 | -879.6 | |
| 0.00 | 1.34 | 0.00 | 0.74 | 15.62 | 352.77 | 24.25 | 291.81 | 0.4279 | 761.0 | 616.5 | |
| 0.00 | 0.45 | 0.00 | 0.24 | 20.01 | 350.08 | 21.57 | 303.80 | 0.4174 | 306.0 | 385.6 | |
| 0.00 | 0.99 | 0.00 | 0.53 | 18.49 | 347.90 | 19.38 | 302.92 | 0.3765 | 861.0 | 704.0 | |
| 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. | |