| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.78 | 20.30 | 1.05 | 11.88 | 16.01 | 176.58 | 24.88 | 310.33 | 0.5336 | -225.8 | -136.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-04-28 02:59:06 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 | 1.42 | 0.00 | 0.84 | 15.34 | 178.64 | 26.94 | 307.15 | 0.5504 | -634.0 | -409.8 | |
| 0.00 | 1.78 | 0.00 | 1.06 | 15.52 | 178.53 | 26.83 | 307.55 | 0.5506 | -549.0 | -547.2 | |
| 1.78 | 4.19 | 1.05 | 2.46 | 15.05 | 177.87 | 26.17 | 307.51 | 0.5390 | -756.9 | -745.9 | |
| 0.00 | 1.51 | 0.00 | 0.88 | 15.15 | 176.94 | 25.24 | 308.63 | 0.5291 | -761.0 | -648.6 | |
| 0.00 | 2.76 | 0.00 | 1.60 | 14.74 | 176.34 | 24.64 | 308.67 | 0.5185 | -765.0 | -586.0 | |
| 0.00 | 2.94 | 0.00 | 1.72 | 16.88 | 175.86 | 24.16 | 312.43 | 0.5327 | 876.0 | 695.8 | |
| 0.00 | 1.78 | 0.00 | 1.03 | 16.28 | 175.43 | 23.74 | 312.05 | 0.5224 | 685.0 | 570.7 | |
| 0.00 | 2.58 | 0.00 | 1.49 | 15.80 | 175.37 | 23.67 | 311.40 | 0.5171 | 583.0 | 449.5 | |
| 0.00 | 1.34 | 0.00 | 0.80 | 22.04 | 173.18 | 21.49 | 322.46 | 0.5593 | -684.0 | -560.3 | |
| 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. | |