| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 28.58 | 161.63 | 14.45 | 81.75 | 18.31 | 299.59 | 2.99 | 345.52 | 0.2008 | -1172.0 | -468.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-31 05:59:08 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 | 3.40 | 0.00 | 1.71 | 14.08 | 302.30 | 5.71 | 321.39 | 0.1552 | -774.0 | -735.1 | |
| 0.00 | 0.72 | 0.00 | 0.37 | 19.92 | 302.49 | 5.89 | 336.43 | 0.2423 | -808.0 | -581.2 | |
| 27.24 | 152.76 | 13.77 | 77.27 | 18.40 | 299.62 | 3.02 | 345.61 | 0.2019 | -1291.2 | -452.1 | |
| 1.34 | -3.00 | 0.68 | -3.00 | 18.43 | 299.23 | 2.64 | 347.40 | 0.2009 | -1011.7 | 999999 | |
| 0.00 | 0.90 | 0.00 | 0.45 | 17.63 | 296.90 | 0.30 | 358.40 | 0.1824 | -855.0 | -604.9 | |
| 0.00 | 3.85 | 0.00 | 1.95 | 18.31 | 296.87 | 0.27 | 358.65 | 0.1940 | -719.0 | -697.0 | |
| 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. | |