SDO HMI 2011-12-04 13:58:56 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 |
| 8.36 | 17.74 | 5.92 | 12.41 | -18.29 | 77.45 | -41.56 | 116.92 | 0.7087 | -45.4 | 111.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-04 13:58:56 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 | 2.30 | 0.00 | 1.56 | -17.73 | 79.63 | -39.39 | 117.21 | 0.6820 | 817.0 | 578.3 | |
| 0.00 | 0.34 | 0.00 | 0.23 | -17.67 | 79.40 | -39.62 | 117.02 | 0.6843 | 589.0 | 513.5 | |
| 0.00 | 1.19 | 0.00 | 0.81 | -17.40 | 79.11 | -39.91 | 116.49 | 0.6864 | 492.0 | 383.9 | |
| 0.00 | 1.54 | 0.00 | 1.07 | -18.53 | 77.73 | -41.29 | 117.36 | 0.7068 | -493.0 | -434.9 | |
| 1.88 | 2.64 | 1.30 | 1.83 | -17.56 | 77.71 | -41.30 | 116.06 | 0.7028 | 693.2 | 471.9 | |
| 0.00 | 0.94 | 0.00 | 0.65 | -17.59 | 77.46 | -41.56 | 115.99 | 0.7059 | 419.0 | 415.5 | |
| 6.48 | 8.79 | 4.62 | 6.26 | -18.82 | 76.50 | -42.51 | 117.18 | 0.7214 | -697.2 | -404.0 | |
| 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. | |