| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 27.42 | 0.00 | 14.65 | 7.32 | 349.25 | 21.84 | 271.88 | 0.3703 | -342.5 | -469.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 21:59:08 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 | 2.96 | 0.00 | 1.60 | 7.80 | 351.71 | 24.30 | 273.17 | 0.4101 | -736.0 | -572.8 | |
| 0.00 | 3.32 | 0.00 | 1.80 | 7.05 | 351.53 | 24.12 | 271.32 | 0.4074 | -794.0 | -713.9 | |
| 0.00 | 9.59 | 0.00 | 5.19 | 7.48 | 351.43 | 24.01 | 272.38 | 0.4055 | -990.0 | -771.0 | |
| 0.00 | 0.99 | 0.00 | 0.53 | 7.67 | 350.57 | 23.16 | 272.85 | 0.3919 | -857.0 | -661.5 | |
| 0.00 | 2.24 | 0.00 | 1.19 | 6.45 | 348.83 | 21.41 | 269.48 | 0.3643 | -789.0 | -597.6 | |
| 0.00 | 1.52 | 0.00 | 0.81 | 6.54 | 348.14 | 20.73 | 269.63 | 0.3532 | -752.0 | -577.2 | |
| 0.00 | 1.25 | 0.00 | 0.66 | 7.47 | 346.30 | 18.89 | 272.24 | 0.3227 | -754.0 | -515.1 | |
| 0.00 | 1.16 | 0.00 | 0.61 | 7.78 | 345.99 | 18.58 | 273.23 | 0.3176 | -741.0 | -670.8 | |
| 0.00 | 0.90 | 0.00 | 0.46 | 7.32 | 343.00 | 15.59 | 271.67 | 0.2679 | 856.0 | 726.9 | |
| 0.00 | 1.61 | 0.00 | 0.83 | 7.11 | 342.71 | 15.30 | 270.89 | 0.2630 | 862.0 | 723.2 | |
| 0.00 | 1.88 | 0.00 | 0.97 | 7.48 | 342.69 | 15.28 | 272.28 | 0.2627 | 928.0 | 701.0 | |
| 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. | |