| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 4.69 | 12.10 | 4.52 | 11.78 | -18.92 | 78.35 | 57.65 | 248.16 | 0.8628 | 14.1 | 134.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-12 00:58:55 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 | 1.53 | 0.00 | 1.56 | -18.67 | 79.89 | 59.19 | 248.76 | 0.8749 | 386.0 | 376.3 | |
| 0.34 | 2.30 | 0.34 | 2.29 | -18.33 | 79.27 | 58.57 | 249.02 | 0.8695 | 648.8 | 479.8 | |
| 2.90 | 4.09 | 2.85 | 4.02 | -19.18 | 78.73 | 58.02 | 247.95 | 0.8664 | -381.6 | -243.7 | |
| 0.00 | 1.11 | 0.00 | 1.08 | -18.68 | 78.45 | 57.75 | 248.46 | 0.8634 | 437.0 | 338.5 | |
| 1.45 | 3.07 | 1.33 | 2.83 | -19.26 | 76.18 | 55.48 | 247.30 | 0.8453 | -374.9 | -418.9 | |
| 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. | |