| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 26.68 | 154.86 | 13.60 | 78.99 | 18.32 | 299.70 | 8.05 | 325.60 | 0.2374 | -1188.4 | -420.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-31 14:59:08 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 | 0.98 | 0.00 | 0.50 | 14.21 | 302.69 | 11.04 | 303.92 | 0.2247 | -823.0 | -645.5 | |
| 0.00 | 4.21 | 0.00 | 2.14 | 14.00 | 302.52 | 10.87 | 303.51 | 0.2205 | -970.0 | -724.9 | |
| 25.87 | 149.67 | 13.19 | 76.35 | 18.47 | 299.64 | 7.99 | 326.24 | 0.2382 | -1261.7 | -408.4 | |
| 0.81 | -3.00 | 0.41 | -3.00 | 18.51 | 299.16 | 7.51 | 327.93 | 0.2344 | -917.2 | 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. | |