SDO HMI 2011-08-28 17:59:08 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 |
| 0.00 | 9.76 | 0.00 | 5.18 | 18.93 | 312.02 | -17.61 | 53.67 | 0.3567 | -591.6 | -129.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 17:59:08 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 | 1.97 | 0.00 | 1.04 | 18.77 | 313.18 | -16.44 | 52.33 | 0.3400 | -1093.0 | -831.7 | |
| 0.00 | 0.99 | 0.00 | 0.52 | 18.99 | 313.13 | -16.50 | 51.90 | 0.3427 | -842.0 | -590.5 | |
| 0.00 | 1.25 | 0.00 | 0.66 | 19.03 | 312.65 | -16.97 | 52.51 | 0.3492 | -946.0 | -692.6 | |
| 0.00 | 1.79 | 0.00 | 0.95 | 17.80 | 311.81 | -17.81 | 56.74 | 0.3498 | -993.0 | -614.5 | |
| 0.00 | 3.76 | 0.00 | 2.01 | 19.50 | 311.02 | -18.61 | 53.74 | 0.3746 | 916.0 | 767.2 | |
| 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. | |