| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 14.88 | 0.00 | 8.21 | 24.28 | 330.37 | -18.59 | 41.45 | 0.4393 | -108.6 | -302.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-20 19:59:01 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 |
| 0.00 | 4.18 | 0.00 | 2.29 | 25.12 | 332.49 | -16.47 | 37.06 | 0.4278 | -807.0 | -425.4 | |
| 0.00 | 5.05 | 0.00 | 2.73 | 22.63 | 332.44 | -16.52 | 41.29 | 0.3994 | -806.0 | -621.3 | |
| 0.00 | 1.22 | 0.00 | 0.66 | 22.64 | 330.48 | -18.49 | 44.30 | 0.4208 | -595.0 | -439.8 | |
| 0.00 | 1.48 | 0.00 | 0.81 | 21.47 | 328.90 | -20.06 | 48.63 | 0.4272 | -803.0 | -577.5 | |
| 0.00 | 0.78 | 0.00 | 0.45 | 27.87 | 325.79 | -23.18 | 41.89 | 0.5233 | 791.0 | 622.4 | |
| 0.00 | 1.13 | 0.00 | 0.66 | 28.48 | 325.46 | -23.50 | 41.38 | 0.5324 | 713.0 | 495.9 | |
| 0.00 | 1.04 | 0.00 | 0.61 | 26.76 | 323.72 | -25.24 | 45.72 | 0.5340 | 747.0 | 536.1 | |
| 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. | |