SDO HMI 2014-03-04 17:00:28 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 |
| 0.00 | 8.54 | 0.00 | 5.48 | 21.59 | 110.59 | 26.86 | 318.39 | 0.6374 | -257.0 | -251.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-04 17:00:28 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 | 2.07 | 0.00 | 1.39 | 22.59 | 114.58 | 30.86 | 315.44 | 0.6773 | -682.0 | -454.8 | |
| 0.00 | 0.60 | 0.00 | 0.38 | 18.35 | 113.21 | 29.49 | 311.71 | 0.6281 | -611.0 | -511.6 | |
| 0.00 | 2.07 | 0.00 | 1.32 | 18.54 | 113.14 | 29.41 | 312.02 | 0.6291 | -663.0 | -563.6 | |
| 0.00 | 1.21 | 0.00 | 0.78 | 20.96 | 112.94 | 29.22 | 315.10 | 0.6482 | -633.0 | -533.2 | |
| 0.00 | 0.95 | 0.00 | 0.59 | 20.55 | 108.47 | 24.74 | 319.29 | 0.6031 | 638.0 | 521.3 | |
| 0.00 | 1.64 | 0.00 | 1.02 | 26.45 | 100.28 | 16.55 | 335.12 | 0.6086 | 409.0 | 297.0 | |
| 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. | |