SDO HMI 2014-09-20 18:00:34 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 |
| 7.26 | 37.91 | 10.91 | 60.94 | -14.91 | 250.86 | -69.16 | 108.27 | 0.9517 | 296.3 | 14.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-20 18:00:34 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 |
| 7.26 | 30.20 | 10.91 | 45.44 | -15.33 | 252.28 | -67.74 | 109.01 | 0.9454 | 447.3 | 152.0 | |
| 0.00 | 0.71 | 0.00 | 1.37 | -14.50 | 247.51 | -72.50 | 107.12 | 0.9673 | -301.0 | -225.8 | |
| 0.00 | 1.15 | 0.00 | 2.49 | -14.80 | 245.81 | -74.21 | 107.09 | 0.9743 | -28.0 | -15.8 | |
| 0.00 | 5.85 | 0.00 | 11.64 | -13.33 | 246.77 | -73.25 | 105.78 | 0.9694 | -429.0 | -357.8 | |
| 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. | |