SDO HMI 2011-08-20 13:59:09 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!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 4.05 | 0.00 | 2.77 | -19.15 | 113.16 | 35.62 | 232.85 | 0.6931 | -554.6 | -523.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-20 13:59:09 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 | 0.54 | 0.00 | 0.37 | -18.82 | 113.47 | 35.92 | 233.44 | 0.6937 | -380.0 | -473.2 | |
| 0.00 | 0.72 | 0.00 | 0.49 | -18.50 | 113.23 | 35.69 | 233.66 | 0.6891 | -579.0 | -511.8 | |
| 0.00 | 1.44 | 0.00 | 0.98 | -18.33 | 113.15 | 35.61 | 233.81 | 0.6871 | -723.0 | -582.2 | |
| 0.00 | 0.90 | 0.00 | 0.61 | -18.66 | 113.11 | 35.57 | 233.37 | 0.6890 | -596.0 | -506.0 | |
| 0.00 | 0.45 | 0.00 | 0.32 | -24.01 | 112.84 | 35.30 | 226.96 | 0.7245 | -495.0 | -457.4 | |
| 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. | |