SDO HMI 2011-08-21 22:59:09 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 |
| 5.66 | 37.49 | 7.42 | 56.77 | 7.84 | 347.87 | -71.49 | 84.08 | 0.9427 | -448.1 | -197.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-21 22:59:09 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 |
| 5.30 | 29.48 | 6.94 | 38.77 | 7.40 | 351.00 | -68.36 | 84.81 | 0.9272 | -730.3 | -316.2 | |
| 0.36 | -1.00 | 0.48 | -1.00 | 7.36 | 350.41 | -68.94 | 84.80 | 0.9309 | -275.2 | 999999 | |
| 0.00 | 1.62 | 0.00 | 2.42 | 8.44 | 347.98 | -71.37 | 83.45 | 0.9449 | -389.0 | -296.8 | |
| 0.00 | 1.71 | 0.00 | 4.04 | 8.76 | 340.65 | -78.70 | 82.49 | 0.9785 | 238.0 | 229.7 | |
| 0.00 | 1.89 | 0.00 | 4.62 | 9.11 | 340.20 | -79.15 | 82.09 | 0.9800 | 254.0 | 110.5 | |
| 0.00 | 2.79 | 0.00 | 6.92 | 8.72 | 340.02 | -79.33 | 82.47 | 0.9807 | -193.0 | -78.5 | |
| 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. | |