SDO HMI 2014-03-31 00:00:31 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 |
| 4.29 | 12.79 | 6.22 | 18.05 | -25.31 | 167.47 | 70.34 | 245.40 | 0.9374 | 240.0 | 255.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-31 00:00:31 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 |
| 1.49 | 2.89 | 2.40 | 4.66 | -24.86 | 170.42 | 73.29 | 245.97 | 0.9529 | 57.3 | 45.3 | |
| 0.70 | 2.45 | 0.91 | 3.21 | -23.94 | 165.55 | 68.42 | 246.80 | 0.9263 | 291.5 | 244.9 | |
| 0.00 | 0.70 | 0.00 | 0.92 | -24.22 | 165.68 | 68.55 | 246.50 | 0.9272 | 284.0 | 217.4 | |
| 2.10 | 6.22 | 2.91 | 8.58 | -26.15 | 166.96 | 69.83 | 244.49 | 0.9352 | 462.8 | 392.2 | |
| 0.00 | 0.53 | 0.00 | 0.68 | -25.66 | 165.30 | 68.17 | 244.92 | 0.9255 | -61.0 | -96.2 | |
| 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. | |