SDO HMI 2011-08-25 15:59:53 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 | 10.24 | 0.00 | 8.19 | -20.93 | 54.67 | 44.31 | 236.17 | 0.7870 | -30.2 | 156.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-25 15:59:53 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 | 2.06 | 0.00 | 1.75 | -19.47 | 58.42 | 48.06 | 239.82 | 0.8135 | 401.0 | 408.4 | |
| 0.00 | 3.50 | 0.00 | 2.82 | -20.91 | 55.08 | 44.72 | 236.48 | 0.7906 | 589.0 | 545.9 | |
| 0.00 | 1.08 | 0.00 | 0.89 | -23.02 | 55.43 | 45.07 | 234.33 | 0.8042 | 566.0 | 475.9 | |
| 0.00 | 0.90 | 0.00 | 0.69 | -20.83 | 52.28 | 41.92 | 234.95 | 0.7649 | -518.0 | -495.5 | |
| 0.00 | 1.62 | 0.00 | 1.24 | -21.07 | 52.32 | 41.95 | 234.70 | 0.7666 | -570.0 | -523.2 | |
| 0.00 | 1.08 | 0.00 | 0.80 | -21.71 | 49.86 | 39.50 | 232.42 | 0.7480 | -649.0 | -507.4 | |
| 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. | |