| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 20.12 | 36.56 | 12.03 | 21.93 | 19.30 | 34.62 | -22.78 | 40.36 | 0.5663 | -493.9 | -315.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-12 08:58:57 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 |
| 13.44 | 29.54 | 8.04 | 17.65 | 19.42 | 35.13 | -22.28 | 39.62 | 0.5629 | -972.7 | -543.8 | |
| 2.91 | -1.00 | 1.73 | -1.00 | 18.86 | 35.04 | -22.37 | 40.41 | 0.5578 | -832.2 | 999999 | |
| 2.14 | -1.00 | 1.28 | -1.00 | 19.10 | 34.87 | -22.54 | 40.33 | 0.5619 | -552.5 | 999999 | |
| 1.63 | 3.08 | 0.98 | 1.85 | 18.94 | 34.24 | -23.16 | 41.29 | 0.5660 | -448.9 | -344.5 | |
| 0.00 | 0.86 | 0.00 | 0.52 | 19.41 | 33.21 | -24.20 | 41.93 | 0.5807 | -586.0 | -472.6 | |
| 0.00 | 0.51 | 0.00 | 0.31 | 18.58 | 32.79 | -24.62 | 43.44 | 0.5764 | 609.0 | 424.5 | |
| 0.00 | 0.77 | 0.00 | 0.47 | 18.75 | 32.73 | -24.68 | 43.30 | 0.5787 | 648.0 | 589.4 | |
| 0.00 | 1.03 | 0.00 | 0.64 | 20.39 | 30.46 | -26.95 | 43.78 | 0.6163 | 621.0 | 525.7 | |
| 0.00 | 0.77 | 0.00 | 0.49 | 20.32 | 29.37 | -28.04 | 44.97 | 0.6261 | 704.0 | 552.0 | |
| 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. | |