SDO HMI 2011-08-30 08:59:08 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 |
| 7.44 | 22.13 | 3.90 | 11.67 | 24.18 | 298.05 | -10.12 | 28.67 | 0.3399 | -75.4 | 212.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-30 08:59:08 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 |
| 6.81 | 11.38 | 3.57 | 5.98 | 24.76 | 300.02 | -8.15 | 22.97 | 0.3312 | -1071.3 | -678.0 | |
| 0.00 | 1.25 | 0.00 | 0.66 | 25.03 | 299.22 | -8.94 | 24.55 | 0.3405 | -757.0 | -575.2 | |
| 0.00 | 0.99 | 0.00 | 0.53 | 25.48 | 296.26 | -11.91 | 30.45 | 0.3691 | 772.0 | 616.6 | |
| 0.63 | 5.38 | 0.33 | 2.86 | 25.22 | 296.25 | -11.92 | 30.86 | 0.3657 | 1090.0 | 886.5 | |
| 0.00 | 1.25 | 0.00 | 0.66 | 20.77 | 294.65 | -13.51 | 42.48 | 0.3250 | 857.0 | 691.6 | |
| 0.00 | 1.88 | 0.00 | 0.98 | 18.57 | 293.72 | -14.44 | 49.54 | 0.3121 | 832.0 | 653.5 | |
| 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. | |