SDO HMI 2011-12-18 19:58:55 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 | 9.44 | 0.00 | 5.71 | -19.10 | 321.94 | 30.71 | 237.33 | 0.5761 | -511.9 | -404.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-18 19:58:55 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 | 1.36 | 0.00 | 0.85 | -17.26 | 325.84 | 34.61 | 242.83 | 0.6120 | 770.0 | 625.1 | |
| 0.00 | 0.34 | 0.00 | 0.21 | -17.63 | 323.07 | 31.84 | 240.53 | 0.5797 | -649.0 | -567.8 | |
| 0.00 | 1.19 | 0.00 | 0.72 | -17.11 | 322.86 | 31.63 | 241.22 | 0.5740 | -610.0 | -423.7 | |
| 0.00 | 1.19 | 0.00 | 0.71 | -17.21 | 321.94 | 30.71 | 240.42 | 0.5631 | -697.0 | -502.1 | |
| 0.00 | 1.36 | 0.00 | 0.83 | -20.18 | 322.14 | 30.91 | 235.91 | 0.5844 | -731.0 | -582.1 | |
| 0.00 | 1.36 | 0.00 | 0.82 | -19.07 | 321.54 | 30.31 | 237.17 | 0.5699 | -691.0 | -569.0 | |
| 0.00 | 2.21 | 0.00 | 1.32 | -21.49 | 319.48 | 28.25 | 231.73 | 0.5631 | -838.0 | -718.1 | |
| 0.00 | 0.43 | 0.00 | 0.25 | -21.63 | 318.76 | 27.52 | 230.87 | 0.5560 | -649.0 | -658.2 | |
| 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. | |