| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 15.95 | 31.21 | 19.30 | 37.23 | 19.40 | 65.61 | 60.88 | 295.09 | 0.9103 | 20.1 | 167.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-16 08:58:57 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 |
| 5.83 | 9.95 | 7.86 | 13.43 | 18.59 | 69.22 | 64.49 | 293.13 | 0.9318 | -457.6 | -146.9 | |
| 1.29 | 2.14 | 1.72 | 2.87 | 18.88 | 68.92 | 64.18 | 293.51 | 0.9305 | -417.7 | -384.5 | |
| 0.94 | 1.54 | 1.17 | 1.91 | 18.02 | 67.29 | 62.55 | 293.08 | 0.9190 | -368.2 | -414.1 | |
| 0.00 | 1.46 | 0.00 | 1.61 | 20.12 | 63.06 | 58.32 | 296.62 | 0.8957 | 306.0 | 228.6 | |
| 3.34 | 9.78 | 3.65 | 10.62 | 20.14 | 62.65 | 57.92 | 296.78 | 0.8929 | 483.8 | 412.4 | |
| 2.49 | -5.00 | 2.70 | -5.00 | 20.31 | 62.39 | 57.66 | 297.05 | 0.8916 | 439.7 | 999999 | |
| 2.06 | 5.83 | 2.20 | 6.24 | 19.98 | 62.09 | 57.35 | 296.81 | 0.8885 | 659.4 | 548.0 | |
| 0.00 | 0.51 | 0.00 | 0.55 | 22.03 | 60.97 | 56.23 | 299.39 | 0.8864 | 465.0 | 414.2 | |
| 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. | |