SDO HMI 2011-11-18 20:58:57 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 |
| 14.33 | 38.00 | 14.22 | 38.21 | 7.80 | 265.48 | -60.55 | 82.42 | 0.8720 | -305.5 | -186.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-11-18 20:58:57 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 | 0.77 | 0.00 | 0.76 | 8.42 | 266.40 | -59.63 | 81.68 | 0.8646 | 571.0 | 500.3 | |
| 1.72 | 2.40 | 1.71 | 2.39 | 8.82 | 265.81 | -60.22 | 81.24 | 0.8698 | 509.1 | 322.5 | |
| 9.78 | 25.66 | 9.66 | 25.30 | 7.54 | 266.07 | -59.96 | 82.71 | 0.8672 | -765.1 | -293.8 | |
| 2.83 | 5.83 | 2.85 | 5.89 | 8.71 | 265.41 | -60.62 | 81.38 | 0.8732 | 440.1 | 133.1 | |
| 0.00 | 0.86 | 0.00 | 0.88 | 9.03 | 265.07 | -60.95 | 81.03 | 0.8761 | -332.0 | -259.2 | |
| 0.00 | 0.94 | 0.00 | 1.10 | 6.85 | 261.09 | -64.94 | 83.59 | 0.9069 | -252.0 | -244.2 | |
| 0.00 | 1.54 | 0.00 | 1.89 | 6.91 | 259.76 | -66.27 | 83.52 | 0.9164 | -287.0 | -201.1 | |
| 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. | |