SDO HMI 2011-12-08 16:58:55 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 |
| 1.28 | 12.52 | 0.68 | 6.71 | -18.57 | 77.18 | 12.53 | 212.85 | 0.3814 | -195.6 | 67.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-08 16:58:55 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 | 4.60 | 0.00 | 2.47 | -17.74 | 78.95 | 14.30 | 217.71 | 0.3862 | 977.0 | 814.2 | |
| 0.00 | 1.11 | 0.00 | 0.60 | -18.11 | 78.79 | 14.14 | 216.79 | 0.3893 | 862.0 | 576.8 | |
| 1.28 | 1.70 | 0.68 | 0.90 | -18.11 | 75.83 | 11.17 | 210.69 | 0.3625 | -887.1 | -757.8 | |
| 0.00 | 2.98 | 0.00 | 1.60 | -19.49 | 75.92 | 11.27 | 208.95 | 0.3822 | -736.0 | -684.8 | |
| 0.00 | 0.94 | 0.00 | 0.50 | -19.77 | 75.46 | 10.81 | 207.59 | 0.3827 | -782.0 | -591.9 | |
| 0.00 | 1.19 | 0.00 | 0.64 | -19.64 | 75.23 | 10.58 | 207.25 | 0.3792 | -829.0 | -599.1 | |
| 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. | |