SDO HMI 2014-07-17 19:00:40 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 |
| 0.00 | 7.81 | 0.00 | 4.17 | -13.19 | 88.63 | -9.88 | 155.92 | 0.3655 | 66.0 | -33.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-17 19:00:40 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 | 1.00 | 0.00 | 0.52 | -12.19 | 102.36 | 3.85 | 192.85 | 0.2967 | 813.0 | 669.5 | |
| 0.00 | 0.82 | 0.00 | 0.42 | -12.27 | 99.99 | 1.48 | 184.99 | 0.2920 | 723.0 | 676.2 | |
| 0.00 | 1.09 | 0.00 | 0.55 | -6.12 | 96.48 | -2.03 | 169.25 | 0.1895 | 751.0 | 539.5 | |
| 0.00 | 1.00 | 0.00 | 0.54 | -13.85 | 85.01 | -13.50 | 144.15 | 0.3888 | -853.0 | -660.6 | |
| 0.00 | 1.63 | 0.00 | 0.88 | -14.03 | 84.09 | -14.42 | 142.63 | 0.3998 | -800.0 | -603.9 | |
| 0.00 | 1.00 | 0.00 | 0.56 | -18.17 | 80.93 | -17.58 | 143.15 | 0.4804 | 619.0 | 407.4 | |
| 0.00 | 1.27 | 0.00 | 0.70 | -14.51 | 80.12 | -18.39 | 136.58 | 0.4462 | -791.0 | -587.2 | |
| 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. | |