SDO HMI 2014-04-18 05:00:34 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 |
| 31.37 | 203.65 | 32.24 | 208.82 | 11.85 | 275.82 | 59.02 | 286.69 | 0.8779 | -651.4 | -207.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 05:00:34 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 |
| 30.84 | 196.02 | 31.73 | 201.54 | 11.83 | 275.92 | 59.12 | 286.64 | 0.8787 | -750.1 | -221.8 | |
| 0.00 | 1.33 | 0.00 | 1.26 | 11.48 | 273.19 | 56.39 | 286.96 | 0.8553 | 153.0 | 137.7 | |
| 0.53 | 1.51 | 0.51 | 1.45 | 12.31 | 273.40 | 56.60 | 287.85 | 0.8589 | -260.8 | -252.7 | |
| 0.00 | 3.28 | 0.00 | 3.14 | 12.98 | 273.07 | 56.27 | 288.69 | 0.8576 | 358.0 | 224.8 | |
| 0.00 | 1.51 | 0.00 | 1.43 | 12.77 | 272.83 | 56.03 | 288.53 | 0.8551 | 469.0 | 300.4 | |
| 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. | |