| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 17.91 | 106.38 | 18.17 | 107.46 | 11.82 | 263.06 | 58.37 | 286.88 | 0.8712 | -422.9 | -180.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-19 03:00:34 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 |
| 17.20 | 100.44 | 17.68 | 103.41 | 11.77 | 263.80 | 59.11 | 286.54 | 0.8783 | -664.2 | -208.0 | |
| 0.00 | 1.33 | 0.00 | 0.92 | 13.09 | 245.35 | 40.66 | 294.83 | 0.7016 | 575.0 | 488.7 | |
| 0.71 | 1.77 | 0.49 | 1.22 | 12.79 | 245.17 | 40.48 | 294.54 | 0.6982 | 635.8 | 562.5 | |
| 0.00 | 1.95 | 0.00 | 1.31 | 12.95 | 243.11 | 38.42 | 295.87 | 0.6754 | 552.0 | 475.0 | |
| 0.00 | 0.89 | 0.00 | 0.60 | 14.48 | 243.21 | 38.52 | 297.88 | 0.6845 | 293.0 | 340.9 | |
| 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. | |