| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 4.18 | 0.00 | 2.73 | -11.81 | 291.54 | -35.61 | 118.30 | 0.6428 | 514.2 | 451.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-20 05:00:34 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 |
| 0.00 | 1.15 | 0.00 | 0.68 | -8.90 | 298.76 | -28.39 | 119.08 | 0.5396 | 694.0 | 505.8 | |
| 0.00 | 0.98 | 0.00 | 0.61 | -12.18 | 295.28 | -31.88 | 121.17 | 0.6055 | 729.0 | 576.3 | |
| 0.00 | 0.98 | 0.00 | 0.62 | -11.82 | 293.12 | -34.03 | 119.01 | 0.6286 | 522.0 | 401.1 | |
| 0.00 | 0.27 | 0.00 | 0.20 | -14.16 | 282.74 | -44.42 | 115.83 | 0.7563 | 320.0 | 407.7 | |
| 0.00 | 0.80 | 0.00 | 0.62 | -13.85 | 281.22 | -45.93 | 114.72 | 0.7703 | 306.0 | 335.9 | |
| 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. | |