SDO HMI 2011-12-04 21:58:56 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 |
| 34.38 | 53.91 | 22.61 | 35.37 | -18.19 | 77.42 | -37.17 | 119.00 | 0.6584 | -65.6 | -62.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-04 21:58:56 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 |
| 0.00 | 0.94 | 0.00 | 0.59 | -17.61 | 80.25 | -34.34 | 119.86 | 0.6224 | 681.0 | 521.1 | |
| 0.00 | 1.71 | 0.00 | 1.08 | -17.27 | 79.65 | -34.95 | 118.98 | 0.6277 | 721.0 | 547.8 | |
| 14.93 | 20.90 | 9.63 | 13.48 | -17.46 | 78.42 | -36.18 | 118.53 | 0.6432 | 845.6 | 376.9 | |
| 0.00 | 1.96 | 0.00 | 1.27 | -17.37 | 77.90 | -36.69 | 118.11 | 0.6489 | 378.0 | 384.0 | |
| 0.00 | 0.85 | 0.00 | 0.56 | -18.74 | 77.41 | -37.19 | 119.76 | 0.6617 | -447.0 | -484.8 | |
| 19.45 | 26.44 | 12.98 | 17.64 | -18.84 | 76.47 | -38.12 | 119.37 | 0.6728 | -833.2 | -660.7 | |
| 0.00 | 1.11 | 0.00 | 0.75 | -18.82 | 75.72 | -38.88 | 118.93 | 0.6812 | -473.0 | -386.6 | |
| 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. | |