| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 6.55 | 0.00 | 3.30 | 8.97 | 329.40 | 8.84 | 284.93 | 0.1647 | 472.5 | 437.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-20 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 |
| 0.00 | 1.06 | 0.00 | 0.55 | 8.63 | 337.69 | 17.12 | 276.31 | 0.2942 | -821.0 | -673.1 | |
| 0.00 | 1.86 | 0.00 | 0.93 | 7.85 | 329.11 | 8.54 | 275.63 | 0.1485 | 989.0 | 749.2 | |
| 0.00 | 2.48 | 0.00 | 1.24 | 7.68 | 328.15 | 7.59 | 274.97 | 0.1320 | 906.0 | 612.6 | |
| 0.00 | 1.15 | 0.00 | 0.58 | 13.86 | 324.70 | 4.14 | 329.30 | 0.1379 | 816.0 | 617.9 | |
| 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. | |