SDO HMI 2011-12-04 18:58:56 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 |
| 25.50 | 144.74 | 23.56 | 132.27 | 17.49 | 60.80 | -55.46 | 69.35 | 0.8410 | -519.8 | -145.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-04 18:58:56 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 |
| 20.56 | 124.96 | 18.29 | 111.44 | 17.00 | 61.67 | -54.59 | 69.73 | 0.8330 | -866.8 | -193.2 | |
| 0.00 | 1.45 | 0.00 | 1.34 | 17.43 | 60.28 | -55.98 | 69.54 | 0.8462 | -136.0 | -102.4 | |
| 0.00 | 1.36 | 0.00 | 1.30 | 19.07 | 59.45 | -56.80 | 67.81 | 0.8562 | 527.0 | 314.8 | |
| 2.13 | 8.27 | 2.20 | 8.58 | 21.04 | 56.91 | -59.35 | 66.14 | 0.8799 | -361.0 | -41.6 | |
| 0.68 | -4.00 | 0.70 | -4.00 | 20.69 | 56.89 | -59.37 | 66.53 | 0.8795 | 146.5 | 999999 | |
| 0.00 | 0.85 | 0.00 | 0.94 | 20.27 | 54.72 | -61.54 | 67.43 | 0.8950 | 378.0 | 300.4 | |
| 0.00 | 3.67 | 0.00 | 3.97 | 19.64 | 55.07 | -61.19 | 68.06 | 0.8916 | 556.0 | 501.0 | |
| 2.13 | 3.24 | 2.37 | 3.60 | 19.67 | 54.25 | -62.00 | 68.18 | 0.8975 | 308.6 | 208.8 | |
| 0.00 | 0.94 | 0.00 | 1.10 | 21.30 | 52.99 | -63.26 | 66.61 | 0.9083 | -358.0 | -332.2 | |
| 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. | |