| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.44 | 5.85 | 0.33 | 4.33 | 14.83 | 262.92 | -48.29 | 76.37 | 0.7449 | -366.5 | -304.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-21 10:00:34 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 | 1.33 | 0.00 | 0.97 | 16.12 | 263.77 | -47.45 | 74.55 | 0.7365 | 439.0 | 393.5 | |
| 0.00 | 1.33 | 0.00 | 0.98 | 14.40 | 263.07 | -48.14 | 76.95 | 0.7429 | -715.0 | -662.8 | |
| 0.44 | 1.42 | 0.33 | 1.05 | 14.34 | 262.85 | -48.36 | 77.04 | 0.7453 | -582.0 | -532.3 | |
| 0.00 | 1.77 | 0.00 | 1.33 | 14.60 | 262.26 | -48.96 | 76.75 | 0.7522 | -537.0 | -424.8 | |
| 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. | |