SDO HMI 2011-08-25 13:59:08 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!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 8.89 | 57.72 | 20.75 | 136.98 | 13.40 | 292.41 | -79.06 | 77.75 | 0.9783 | -136.7 | 16.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-25 13:59:08 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 |
| 1.97 | 57.72 | 4.56 | 136.98 | 13.70 | 292.62 | -78.85 | 77.46 | 0.9775 | -275.3 | 16.1 | |
| 1.26 | -1.00 | 2.95 | -1.00 | 13.69 | 292.29 | -79.18 | 77.44 | 0.9786 | 242.0 | 999999 | |
| 3.77 | -1.00 | 8.73 | -1.00 | 13.25 | 292.52 | -78.95 | 77.91 | 0.9780 | -382.9 | 999999 | |
| 1.89 | -1.00 | 4.51 | -1.00 | 13.19 | 292.07 | -79.40 | 77.93 | 0.9795 | 232.5 | 999999 | |
| 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. | |