SDO HMI 2011-04-30 01:59:07 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 |
| 18.63 | 163.92 | 23.85 | 206.43 | 18.03 | 62.03 | -63.78 | 68.19 | 0.9177 | -372.8 | -169.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-04-30 01:59:07 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 | 0.71 | 0.00 | 0.74 | 20.44 | 68.50 | -57.32 | 63.91 | 0.8801 | -454.0 | -405.2 | |
| 4.19 | 137.63 | 4.81 | 158.27 | 18.16 | 64.55 | -61.27 | 67.50 | 0.9037 | -752.1 | -218.2 | |
| 10.87 | -2.00 | 12.49 | -2.00 | 17.75 | 64.39 | -61.43 | 67.98 | 0.9040 | -677.2 | 999999 | |
| 0.00 | 1.16 | 0.00 | 2.15 | 19.45 | 53.83 | -71.99 | 68.46 | 0.9652 | 136.0 | 108.2 | |
| 0.00 | 0.62 | 0.00 | 1.15 | 18.90 | 53.79 | -72.02 | 69.03 | 0.9649 | 236.0 | 227.1 | |
| 3.57 | 23.80 | 6.55 | 44.12 | 18.47 | 53.93 | -71.88 | 69.45 | 0.9640 | 328.0 | -8.6 | |
| 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. | |