| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 12.15 | 51.60 | 14.43 | 61.67 | -23.18 | 118.16 | -65.64 | 113.15 | 0.9122 | 495.0 | 379.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 17:00:34 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 |
| 9.31 | 42.02 | 10.98 | 49.37 | -23.21 | 118.63 | -65.17 | 113.21 | 0.9094 | 746.0 | 440.8 | |
| 0.00 | 0.80 | 0.00 | 0.97 | -23.70 | 117.83 | -65.97 | 113.68 | 0.9149 | 165.0 | 171.7 | |
| 0.00 | 0.53 | 0.00 | 0.65 | -23.35 | 117.60 | -66.20 | 113.28 | 0.9162 | 150.0 | 106.2 | |
| 2.84 | 4.17 | 3.45 | 5.06 | -23.10 | 117.76 | -66.04 | 113.03 | 0.9150 | 255.0 | 156.9 | |
| 0.00 | 2.22 | 0.00 | 2.75 | -22.80 | 117.16 | -66.64 | 112.64 | 0.9187 | 311.0 | 223.9 | |
| 0.00 | 0.80 | 0.00 | 1.01 | -22.38 | 116.47 | -67.33 | 112.15 | 0.9228 | 5.0 | 22.7 | |
| 0.00 | 1.06 | 0.00 | 1.86 | -23.24 | 109.58 | -74.23 | 112.74 | 0.9600 | -85.0 | -68.0 | |
| 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. | |