SDO HMI 2011-08-27 16:59:08 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 |
| 6.01 | 25.11 | 17.42 | 71.59 | 16.94 | 64.81 | 81.42 | 286.02 | 0.9847 | -42.8 | -23.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-27 16:59:08 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 |
| 2.33 | 22.41 | 6.91 | 66.18 | 16.80 | 65.37 | 81.98 | 285.91 | 0.9865 | 394.7 | 5.9 | |
| 3.68 | -1.00 | 10.51 | -1.00 | 16.84 | 65.00 | 81.61 | 285.93 | 0.9855 | -261.0 | 999999 | |
| 0.00 | 1.17 | 0.00 | 2.43 | 17.41 | 61.09 | 77.70 | 286.25 | 0.9722 | -394.0 | -379.2 | |
| 0.00 | 0.90 | 0.00 | 1.72 | 18.82 | 59.93 | 76.54 | 287.65 | 0.9672 | -412.0 | -403.5 | |
| 0.00 | 0.63 | 0.00 | 1.26 | 19.53 | 60.72 | 77.33 | 288.42 | 0.9703 | -52.0 | 24.6 | |
| 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. | |