| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 28.58 | 170.42 | 18.39 | 109.82 | -26.62 | 37.33 | -23.64 | 145.92 | 0.6418 | 1015.4 | 349.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-15 08:59:02 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 |
| 28.58 | 163.69 | 18.39 | 105.32 | -26.60 | 37.49 | -23.48 | 146.06 | 0.6403 | 1129.4 | 340.9 | |
| 0.00 | 0.70 | 0.00 | 0.47 | -27.86 | 34.21 | -26.76 | 143.88 | 0.6777 | 773.0 | 751.0 | |
| 0.00 | 1.31 | 0.00 | 0.88 | -28.01 | 34.01 | -26.95 | 143.85 | 0.6806 | 627.0 | 394.5 | |
| 0.00 | 1.57 | 0.00 | 1.06 | -27.84 | 33.87 | -27.10 | 143.54 | 0.6800 | 701.0 | 532.3 | |
| 0.00 | 0.79 | 0.00 | 0.52 | -27.12 | 33.99 | -26.98 | 142.93 | 0.6723 | 675.0 | 566.3 | |
| 0.00 | 1.05 | 0.00 | 0.71 | -28.01 | 33.37 | -27.60 | 143.22 | 0.6855 | 524.0 | 426.1 | |
| 0.00 | 1.31 | 0.00 | 0.86 | -24.40 | 32.46 | -28.50 | 138.59 | 0.6594 | 696.0 | 545.3 | |
| 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. | |