SDO HMI 2011-04-25 14:59:06 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 |
| 1.51 | 13.05 | 0.80 | 6.97 | 15.54 | 177.48 | -7.27 | 19.41 | 0.3683 | 66.7 | 13.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-04-25 14:59:06 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 | 3.64 | 0.00 | 1.93 | 15.28 | 178.31 | -6.44 | 17.58 | 0.3599 | -996.0 | -672.9 | |
| 1.51 | 2.04 | 0.80 | 1.09 | 15.22 | 177.84 | -6.91 | 18.83 | 0.3614 | -745.2 | -824.3 | |
| 0.00 | 1.07 | 0.00 | 0.57 | 15.25 | 177.56 | -7.20 | 19.51 | 0.3634 | -739.0 | -569.7 | |
| 0.00 | 2.93 | 0.00 | 1.57 | 15.90 | 176.96 | -7.79 | 20.34 | 0.3766 | 682.0 | 528.8 | |
| 0.00 | 0.80 | 0.00 | 0.43 | 15.52 | 176.98 | -7.77 | 20.68 | 0.3707 | 891.0 | 752.0 | |
| 0.00 | 1.24 | 0.00 | 0.67 | 15.97 | 176.74 | -8.01 | 20.80 | 0.3789 | 362.0 | 446.4 | |
| 0.00 | 1.33 | 0.00 | 0.71 | 15.75 | 176.72 | -8.03 | 21.08 | 0.3756 | 850.0 | 691.5 | |
| 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. | |