SDO HMI 2011-02-28 09:58:58 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 |
| 6.04 | 12.58 | 3.74 | 7.83 | 17.55 | 178.06 | -28.08 | 47.97 | 0.6065 | -592.4 | -409.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-28 09:58:58 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 |
| 0.00 | 1.12 | 0.00 | 0.68 | 15.15 | 179.10 | -27.05 | 50.10 | 0.5743 | 789.0 | 584.5 | |
| 0.00 | 2.24 | 0.00 | 1.40 | 18.57 | 178.31 | -27.83 | 46.43 | 0.6131 | -769.0 | -573.5 | |
| 6.04 | 7.33 | 3.74 | 4.54 | 17.43 | 178.26 | -27.88 | 47.92 | 0.6034 | -864.3 | -723.7 | |
| 0.00 | 1.29 | 0.00 | 0.82 | 18.41 | 177.24 | -28.91 | 47.70 | 0.6224 | -738.0 | -600.9 | |
| 0.00 | 0.60 | 0.00 | 0.39 | 17.69 | 174.81 | -31.34 | 50.85 | 0.6413 | -635.0 | -492.6 | |
| 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. | |