SDO HMI 2011-10-17 20:59:01 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 |
| 26.95 | 172.05 | 16.02 | 102.31 | -26.65 | 37.10 | 9.12 | 194.86 | 0.5547 | 1100.0 | 354.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-17 20:59:01 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 |
| 26.95 | 167.52 | 16.02 | 99.67 | -26.68 | 37.24 | 9.26 | 195.06 | 0.5555 | 1216.6 | 347.2 | |
| 0.00 | 0.87 | 0.00 | 0.49 | -22.17 | 34.28 | 6.30 | 192.27 | 0.4799 | 847.0 | 666.1 | |
| 0.00 | 1.13 | 0.00 | 0.64 | -22.54 | 33.74 | 5.76 | 191.09 | 0.4837 | 859.0 | 727.1 | |
| 0.00 | 0.35 | 0.00 | 0.20 | -22.98 | 33.70 | 5.71 | 190.82 | 0.4902 | 641.0 | 460.2 | |
| 0.00 | 0.96 | 0.00 | 0.58 | -29.12 | 30.64 | 2.66 | 184.06 | 0.5745 | 699.0 | 564.8 | |
| 0.00 | 1.22 | 0.00 | 0.73 | -28.14 | 29.57 | 1.59 | 182.51 | 0.5595 | 586.0 | 499.4 | |
| 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. | |