SDO HMI 2011-07-18 09:59:11 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 |
| 34.31 | 250.19 | 17.82 | 129.92 | 16.54 | 169.03 | 12.88 | 314.39 | 0.3002 | -1036.7 | -389.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-07-18 09:59:11 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 |
| 22.42 | 243.56 | 11.65 | 126.54 | 16.57 | 169.28 | 13.13 | 313.86 | 0.3032 | -1368.2 | -422.1 | |
| 8.35 | -1.00 | 4.33 | -1.00 | 16.23 | 169.09 | 12.94 | 313.40 | 0.2972 | -1389.3 | 999999 | |
| 0.82 | -1.00 | 0.42 | -1.00 | 16.83 | 168.97 | 12.82 | 315.15 | 0.3024 | -1037.7 | 999999 | |
| 1.72 | -1.00 | 0.90 | -1.00 | 16.64 | 168.86 | 12.71 | 314.93 | 0.2990 | -1229.4 | 999999 | |
| 1.00 | -1.00 | 0.52 | -1.00 | 16.83 | 168.81 | 12.65 | 315.51 | 0.3005 | -938.5 | 999999 | |
| 0.00 | 1.36 | 0.00 | 0.69 | 15.11 | 164.81 | 8.66 | 321.56 | 0.2348 | 760.0 | 530.5 | |
| 0.00 | 4.54 | 0.00 | 2.32 | 17.81 | 162.77 | 6.62 | 334.38 | 0.2549 | 776.0 | 693.3 | |
| 0.00 | 0.73 | 0.00 | 0.37 | 18.26 | 162.43 | 6.28 | 336.27 | 0.2593 | 866.0 | 709.6 | |
| 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. | |