SDO HMI 2014-08-16 20:00:38 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 | 9.63 | 0.00 | 5.75 | -4.73 | 29.39 | -31.81 | 109.02 | 0.5575 | 573.0 | 487.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-16 20:00:38 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 | 1.98 | 0.00 | 1.16 | -4.15 | 30.66 | -30.54 | 108.78 | 0.5373 | 883.0 | 706.6 | |
| 0.00 | 0.45 | 0.00 | 0.27 | -5.36 | 30.57 | -30.63 | 110.83 | 0.5449 | 584.0 | 494.6 | |
| 0.00 | 1.17 | 0.00 | 0.69 | -4.65 | 30.53 | -30.67 | 109.58 | 0.5416 | 692.0 | 480.8 | |
| 0.00 | 1.62 | 0.00 | 0.95 | -4.38 | 30.44 | -30.76 | 109.04 | 0.5416 | 861.0 | 696.3 | |
| 0.00 | 2.16 | 0.00 | 1.29 | -5.03 | 29.48 | -31.72 | 109.56 | 0.5580 | 769.0 | 605.5 | |
| 0.00 | 1.26 | 0.00 | 0.76 | -4.26 | 28.40 | -32.80 | 107.64 | 0.5690 | 711.0 | 511.5 | |
| 0.00 | 0.99 | 0.00 | 0.63 | -6.09 | 24.68 | -36.52 | 108.57 | 0.6265 | -489.0 | -503.8 | |
| 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. | |