SDO HMI 2011-08-31 02:59:08 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 |
| 0.00 | 5.82 | 0.00 | 3.36 | 20.54 | 325.82 | 27.58 | 300.03 | 0.5110 | -207.5 | -232.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-31 02:59:08 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 |
| 0.00 | 1.07 | 0.00 | 0.64 | 16.89 | 331.18 | 32.94 | 289.86 | 0.5554 | -747.0 | -630.5 | |
| 0.00 | 0.45 | 0.00 | 0.27 | 21.05 | 329.97 | 31.72 | 297.66 | 0.5562 | -475.0 | -541.4 | |
| 0.00 | 1.25 | 0.00 | 0.74 | 20.23 | 329.06 | 30.82 | 296.76 | 0.5404 | -570.0 | -486.4 | |
| 0.00 | 0.90 | 0.00 | 0.50 | 16.01 | 325.44 | 27.20 | 290.78 | 0.4719 | 587.0 | 382.1 | |
| 0.00 | 0.90 | 0.00 | 0.51 | 17.48 | 325.64 | 27.39 | 293.64 | 0.4810 | 739.0 | 699.8 | |
| 0.00 | 1.25 | 0.00 | 0.70 | 29.46 | 316.29 | 18.05 | 324.94 | 0.4716 | -779.0 | -596.9 | |
| 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. | |