SDO HMI 2014-12-04 01:00:25 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 |
| 41.41 | 245.87 | 32.76 | 194.45 | 16.60 | 109.57 | 49.33 | 291.07 | 0.7812 | -813.8 | -286.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-12-04 01:00:25 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 |
| 41.41 | 242.03 | 32.76 | 191.65 | 16.59 | 109.64 | 49.40 | 291.03 | 0.7819 | -975.3 | -299.5 | |
| 0.00 | 0.77 | 0.00 | 0.58 | 17.97 | 106.46 | 46.23 | 293.77 | 0.7528 | 464.0 | 416.9 | |
| 0.00 | 0.94 | 0.00 | 0.69 | 17.95 | 105.38 | 45.15 | 294.12 | 0.7413 | 601.0 | 542.5 | |
| 0.00 | 0.85 | 0.00 | 0.62 | 17.08 | 105.02 | 44.78 | 293.12 | 0.7345 | 698.0 | 616.8 | |
| 0.00 | 1.28 | 0.00 | 0.91 | 17.46 | 103.66 | 43.43 | 294.13 | 0.7209 | 274.0 | 305.3 | |
| 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. | |