SDO HMI 2014-04-12 12:00:33 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 | 4.76 | 0.00 | 2.44 | -17.39 | 299.39 | 7.19 | 207.46 | 0.2433 | -489.0 | -396.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-12 12:00:33 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 | 1.06 | 0.00 | 0.56 | -18.08 | 308.76 | 16.56 | 231.37 | 0.3485 | 764.0 | 687.1 | |
| 0.00 | 1.32 | 0.00 | 0.67 | -17.17 | 297.29 | 5.10 | 203.26 | 0.2159 | -1099.0 | -904.8 | |
| 0.00 | 1.32 | 0.00 | 0.67 | -17.02 | 296.69 | 4.49 | 201.03 | 0.2097 | -809.0 | -583.1 | |
| 0.00 | 1.06 | 0.00 | 0.54 | -17.40 | 295.62 | 3.43 | 195.84 | 0.2100 | -812.0 | -658.2 | |
| 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. | |