SDO HMI 2011-02-08 16:58:56 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 |
| 16.32 | 29.04 | 12.01 | 21.46 | 20.17 | 65.16 | -40.52 | 55.22 | 0.7445 | -148.5 | -72.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-08 16:58:56 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 |
| 6.92 | 8.89 | 5.02 | 6.45 | 20.10 | 66.32 | -39.36 | 54.59 | 0.7331 | -793.2 | -542.1 | |
| 0.00 | 0.60 | 0.00 | 0.43 | 19.54 | 66.29 | -39.40 | 55.27 | 0.7301 | -632.0 | -542.7 | |
| 4.02 | 7.95 | 2.94 | 5.82 | 20.27 | 65.82 | -39.86 | 54.71 | 0.7389 | -499.5 | -303.2 | |
| 0.00 | 0.51 | 0.00 | 0.37 | 19.83 | 65.96 | -39.73 | 55.14 | 0.7350 | -455.0 | -377.8 | |
| 0.00 | 1.45 | 0.00 | 1.07 | 20.72 | 65.47 | -40.21 | 54.41 | 0.7449 | -506.0 | -313.9 | |
| 0.00 | 0.85 | 0.00 | 0.64 | 20.84 | 64.34 | -41.34 | 54.97 | 0.7562 | 578.0 | 459.2 | |
| 5.38 | 6.32 | 4.05 | 4.75 | 19.98 | 63.99 | -41.69 | 56.18 | 0.7547 | 713.2 | 663.6 | |
| 0.00 | 1.62 | 0.00 | 1.23 | 20.00 | 63.39 | -42.29 | 56.51 | 0.7605 | 299.0 | 423.6 | |
| 0.00 | 0.85 | 0.00 | 0.70 | 20.70 | 59.33 | -46.35 | 57.93 | 0.8010 | 603.0 | 547.9 | |
| 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. | |