SDO HMI 2014-08-18 00:00:38 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 |
| 8.82 | 56.45 | 18.07 | 121.02 | -9.75 | 330.68 | -75.09 | 101.75 | 0.9736 | 243.3 | 52.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-18 00:00:38 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 |
| 6.30 | 43.85 | 12.74 | 90.07 | -9.42 | 331.48 | -74.30 | 101.55 | 0.9704 | 435.8 | 173.4 | |
| 2.52 | -1.00 | 5.33 | -1.00 | -9.44 | 330.75 | -75.02 | 101.45 | 0.9733 | 64.0 | 999999 | |
| 0.00 | 6.03 | 0.00 | 14.41 | -11.22 | 329.44 | -76.33 | 103.03 | 0.9792 | -141.0 | -143.0 | |
| 0.00 | 4.68 | 0.00 | 11.71 | -10.74 | 328.76 | -77.02 | 102.43 | 0.9812 | -360.0 | -332.6 | |
| 0.00 | 1.89 | 0.00 | 4.83 | -9.05 | 328.25 | -77.53 | 100.65 | 0.9820 | -267.0 | -228.1 | |
| 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. | |