SDO HMI 2011-12-11 12:58:55 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!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 7.92 | 17.88 | 6.55 | 14.77 | -19.08 | 78.11 | 50.79 | 246.21 | 0.8024 | -201.0 | 16.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-11 12:58:55 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 | 2.21 | 0.00 | 1.88 | -18.58 | 79.60 | 52.27 | 247.24 | 0.8152 | 635.0 | 490.4 | |
| 0.00 | 0.85 | 0.00 | 0.71 | -18.62 | 78.65 | 51.33 | 246.94 | 0.8064 | 498.0 | 418.4 | |
| 5.45 | 6.22 | 4.56 | 5.20 | -19.21 | 78.70 | 51.38 | 246.24 | 0.8084 | -468.1 | -252.3 | |
| 0.00 | 1.87 | 0.00 | 1.55 | -19.37 | 78.17 | 50.85 | 245.89 | 0.8038 | 473.0 | 356.7 | |
| 2.47 | 5.96 | 1.99 | 4.81 | -19.09 | 76.93 | 49.60 | 245.85 | 0.7910 | -565.7 | -443.3 | |
| 0.00 | 0.77 | 0.00 | 0.62 | -19.34 | 77.03 | 49.71 | 245.57 | 0.7927 | -466.0 | -365.9 | |
| 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. | |