SDO HMI 2014-08-20 17:00:38 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 |
| 18.35 | 80.84 | 12.05 | 53.17 | -9.44 | 332.05 | -37.94 | 112.87 | 0.6608 | 735.0 | 470.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-20 17:00:38 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 | 0.99 | 0.00 | 0.60 | -9.02 | 338.09 | -31.91 | 116.12 | 0.5836 | 713.0 | 601.2 | |
| 0.00 | 0.72 | 0.00 | 0.44 | -9.00 | 336.92 | -33.07 | 115.26 | 0.5982 | 680.0 | 558.4 | |
| 0.00 | 1.35 | 0.00 | 0.91 | -14.87 | 332.56 | -37.43 | 120.54 | 0.6844 | 670.0 | 532.5 | |
| 16.28 | 62.85 | 10.66 | 41.12 | -9.48 | 332.41 | -37.58 | 113.13 | 0.6565 | 989.0 | 483.3 | |
| 0.00 | 0.99 | 0.00 | 0.68 | -15.20 | 331.21 | -38.78 | 120.09 | 0.7009 | -638.0 | -532.3 | |
| 2.07 | 6.83 | 1.39 | 4.60 | -9.34 | 330.42 | -39.58 | 111.86 | 0.6797 | 767.1 | 560.2 | |
| 0.00 | 1.08 | 0.00 | 0.73 | -9.36 | 329.77 | -40.22 | 111.55 | 0.6874 | 646.0 | 469.2 | |
| 0.00 | 1.71 | 0.00 | 1.13 | -4.47 | 330.20 | -39.79 | 104.84 | 0.6623 | 703.0 | 628.2 | |
| 0.00 | 0.99 | 0.00 | 0.66 | -7.17 | 329.85 | -40.15 | 108.54 | 0.6770 | 717.0 | 597.1 | |
| 0.00 | 1.08 | 0.00 | 0.72 | -4.33 | 329.62 | -40.38 | 104.40 | 0.6692 | 550.0 | 425.4 | |
| 0.00 | 1.35 | 0.00 | 0.92 | -7.91 | 329.12 | -40.88 | 109.24 | 0.6889 | 635.0 | 476.7 | |
| 0.00 | 0.90 | 0.00 | 0.66 | -13.12 | 326.94 | -43.06 | 115.03 | 0.7361 | -78.0 | -118.2 | |
| 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. | |