| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 3.94 | 13.76 | 3.21 | 11.09 | 13.24 | 120.25 | 49.50 | 290.13 | 0.7903 | 42.7 | 82.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-05-04 05:59:07 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 |
| 1.88 | 3.31 | 1.59 | 2.79 | 13.56 | 122.41 | 51.66 | 289.81 | 0.8126 | -574.3 | -542.4 | |
| 0.00 | 1.07 | 0.00 | 0.90 | 13.28 | 121.93 | 51.17 | 289.63 | 0.8072 | -709.0 | -583.8 | |
| 0.00 | 0.89 | 0.00 | 0.71 | 12.79 | 119.80 | 49.04 | 289.72 | 0.7846 | 621.0 | 527.7 | |
| 0.00 | 0.63 | 0.00 | 0.50 | 13.10 | 119.79 | 49.03 | 290.11 | 0.7854 | 453.0 | 414.3 | |
| 2.06 | 4.11 | 1.62 | 3.25 | 13.05 | 119.39 | 48.64 | 290.19 | 0.7813 | 697.9 | 546.2 | |
| 0.00 | 1.97 | 0.00 | 1.56 | 13.27 | 119.41 | 48.65 | 290.45 | 0.7821 | 753.0 | 541.4 | |
| 0.00 | 0.98 | 0.00 | 0.76 | 13.03 | 118.36 | 47.60 | 290.52 | 0.7705 | -471.0 | -373.1 | |
| 0.00 | 0.80 | 0.00 | 0.62 | 13.48 | 117.92 | 47.17 | 291.24 | 0.7674 | -471.0 | -331.0 | |
| 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. | |