SDO HMI 2011-10-20 03:59:01 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 |
| 53.27 | 322.87 | 50.47 | 305.72 | 27.65 | 54.81 | 57.06 | 299.22 | 0.8538 | -819.3 | -203.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-20 03:59:01 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 |
| 1.05 | 312.58 | 1.00 | 296.57 | 27.39 | 55.53 | 57.78 | 298.77 | 0.8590 | 136.5 | -191.7 | |
| 2.53 | -1.00 | 2.43 | -1.00 | 27.79 | 55.48 | 57.73 | 299.24 | 0.8593 | 131.7 | 999999 | |
| 49.69 | -1.00 | 47.04 | -1.00 | 27.64 | 54.85 | 57.10 | 299.19 | 0.8541 | -916.6 | 999999 | |
| 0.00 | 0.96 | 0.00 | 0.87 | 27.46 | 53.30 | 55.55 | 299.31 | 0.8413 | -678.0 | -642.5 | |
| 0.00 | 1.22 | 0.00 | 1.11 | 27.34 | 53.15 | 55.40 | 299.21 | 0.8398 | -541.0 | -540.9 | |
| 0.00 | 1.92 | 0.00 | 1.74 | 27.99 | 52.93 | 55.18 | 300.01 | 0.8393 | -594.0 | -537.2 | |
| 0.00 | 0.96 | 0.00 | 0.86 | 28.07 | 52.64 | 54.89 | 300.18 | 0.8371 | -598.0 | -494.2 | |
| 0.00 | 3.31 | 0.00 | 2.88 | 27.65 | 51.22 | 53.47 | 300.02 | 0.8243 | -694.0 | -539.3 | |
| 0.00 | 1.92 | 0.00 | 1.69 | 29.60 | 51.35 | 53.60 | 302.28 | 0.8300 | -502.0 | -455.8 | |
| 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. | |