| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 55.00 | 332.70 | 51.34 | 311.06 | 27.62 | 54.84 | 56.54 | 299.28 | 0.8496 | -831.6 | -209.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-20 02:59:01 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 |
| 1.57 | 323.98 | 1.49 | 303.43 | 27.66 | 55.61 | 57.31 | 299.17 | 0.8557 | 185.7 | -200.0 | |
| 52.12 | -1.00 | 48.72 | -1.00 | 27.62 | 54.89 | 56.59 | 299.27 | 0.8500 | -876.4 | 999999 | |
| 0.00 | 2.27 | 0.00 | 2.04 | 27.38 | 53.26 | 54.96 | 299.34 | 0.8362 | -678.0 | -618.2 | |
| 0.00 | 1.57 | 0.00 | 1.40 | 27.96 | 52.98 | 54.69 | 300.09 | 0.8351 | -652.0 | -582.1 | |
| 1.31 | 4.88 | 1.13 | 4.19 | 27.56 | 51.31 | 53.01 | 300.02 | 0.8201 | -539.3 | -543.2 | |
| 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. | |