SDO HMI 2011-08-30 02:59:08 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 |
| 1.25 | 6.46 | 0.76 | 3.94 | 7.85 | 347.35 | 35.90 | 273.54 | 0.5835 | -110.3 | -314.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-30 02:59:08 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 |
| 0.00 | 1.25 | 0.00 | 0.82 | 8.44 | 352.50 | 41.05 | 274.64 | 0.6540 | -572.0 | -485.4 | |
| 0.00 | 0.99 | 0.00 | 0.60 | 7.25 | 347.51 | 36.06 | 272.47 | 0.5866 | -594.0 | -506.3 | |
| 1.25 | 2.87 | 0.76 | 1.74 | 7.27 | 346.83 | 35.38 | 272.46 | 0.5771 | -782.7 | -697.2 | |
| 0.00 | 0.63 | 0.00 | 0.37 | 7.52 | 344.01 | 32.56 | 272.76 | 0.5363 | 631.0 | 502.6 | |
| 0.00 | 0.72 | 0.00 | 0.41 | 10.33 | 342.01 | 30.56 | 278.21 | 0.5074 | 605.0 | 486.0 | |
| 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. | |