SDO HMI 2014-01-17 04:00:24 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 | 7.32 | 0.00 | 6.20 | 16.16 | 27.14 | 50.56 | 293.94 | 0.8125 | 128.6 | 122.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-01-17 04:00:24 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 | 1.02 | 0.00 | 0.96 | 15.79 | 31.67 | 55.08 | 291.89 | 0.8524 | -404.0 | -367.7 | |
| 0.00 | 1.28 | 0.00 | 1.19 | 15.81 | 31.40 | 54.82 | 291.98 | 0.8502 | -321.0 | -373.3 | |
| 0.00 | 2.13 | 0.00 | 1.72 | 16.16 | 25.02 | 48.44 | 294.69 | 0.7932 | 432.0 | 364.2 | |
| 0.00 | 1.70 | 0.00 | 1.37 | 16.36 | 24.71 | 48.13 | 295.05 | 0.7910 | 481.0 | 398.0 | |
| 0.00 | 1.19 | 0.00 | 0.96 | 16.67 | 24.58 | 48.00 | 295.47 | 0.7909 | 455.0 | 402.3 | |
| 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. | |