SDO HMI 2011-02-28 11:58:58 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 |
| 6.21 | 10.77 | 3.41 | 5.99 | -22.34 | 182.05 | -23.00 | 126.83 | 0.4529 | 173.6 | -187.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-28 11:58:58 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 |
| 6.21 | 7.67 | 3.41 | 4.22 | -21.65 | 183.13 | -21.92 | 126.65 | 0.4343 | 934.3 | 792.8 | |
| 0.00 | 1.38 | 0.00 | 0.78 | -23.37 | 180.16 | -24.89 | 126.82 | 0.4846 | -750.0 | -681.2 | |
| 0.00 | 0.60 | 0.00 | 0.34 | -23.92 | 179.40 | -25.65 | 127.08 | 0.4981 | -667.0 | -581.7 | |
| 0.00 | 1.12 | 0.00 | 0.65 | -24.73 | 178.71 | -26.34 | 127.84 | 0.5124 | -656.0 | -603.1 | |
| 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. | |