| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 3.66 | 0.00 | 2.41 | 12.48 | 359.27 | 40.48 | 283.08 | 0.6510 | -484.4 | -475.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-10-18 03:00:30 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 | 0.26 | 0.00 | 0.19 | 12.00 | 5.84 | 47.04 | 281.16 | 0.7320 | -452.0 | -489.3 | |
| 0.00 | 1.13 | 0.00 | 0.79 | 8.03 | 3.61 | 44.82 | 275.70 | 0.7038 | -381.0 | -292.1 | |
| 0.00 | 1.40 | 0.00 | 0.90 | 15.51 | 358.41 | 39.62 | 287.43 | 0.6463 | -744.0 | -626.5 | |
| 0.00 | 0.52 | 0.00 | 0.34 | 15.25 | 357.71 | 38.92 | 287.21 | 0.6368 | -751.0 | -623.2 | |
| 0.00 | 0.35 | 0.00 | 0.19 | 12.15 | 341.52 | 22.73 | 287.71 | 0.3982 | -94.0 | -239.0 | |
| 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. | |