| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 28.67 | 165.59 | 16.36 | 94.52 | 17.86 | 300.00 | -28.52 | 66.19 | 0.4988 | -1050.9 | -387.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 19:59:08 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 |
| 27.06 | 161.91 | 15.44 | 92.36 | 17.83 | 300.07 | -28.45 | 66.20 | 0.4977 | -1212.6 | -390.1 | |
| 1.61 | -1.00 | 0.92 | -1.00 | 17.45 | 299.95 | -28.57 | 66.99 | 0.4976 | -787.7 | 999999 | |
| 0.00 | 1.61 | 0.00 | 0.94 | 21.10 | 298.46 | -30.06 | 61.18 | 0.5355 | -735.0 | -611.4 | |
| 0.00 | 1.08 | 0.00 | 0.63 | 19.49 | 298.10 | -30.42 | 64.25 | 0.5321 | -726.0 | -567.0 | |
| 0.00 | 0.99 | 0.00 | 0.59 | 18.59 | 294.81 | -33.71 | 67.43 | 0.5718 | 563.0 | 467.7 | |
| 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. | |