| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 25.29 | 145.16 | 23.41 | 134.37 | -24.89 | 189.98 | 54.87 | 241.49 | 0.8464 | 771.1 | 180.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-05-21 15:00:38 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 | 1.17 | 0.00 | 1.04 | -22.66 | 188.89 | 53.78 | 243.78 | 0.8320 | -332.0 | -346.6 | |
| 25.29 | 142.01 | 23.41 | 131.65 | -24.90 | 190.04 | 54.93 | 241.49 | 0.8469 | 913.9 | 193.4 | |
| 0.00 | 0.90 | 0.00 | 0.78 | -24.23 | 187.64 | 52.53 | 241.59 | 0.8250 | -194.0 | -205.9 | |
| 0.00 | 1.08 | 0.00 | 0.90 | -26.33 | 184.89 | 49.78 | 238.23 | 0.8071 | -503.0 | -457.1 | |
| 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. | |