SDO HMI 2011-08-28 21:59:08 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 |
| 13.00 | 53.67 | 20.16 | 87.99 | -20.45 | 259.29 | -68.13 | 114.18 | 0.9541 | 280.0 | -112.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 21:59:08 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 |
| 5.56 | 11.38 | 8.41 | 17.23 | -20.81 | 261.05 | -66.36 | 114.99 | 0.9461 | 608.3 | 491.2 | |
| 7.44 | 17.74 | 11.75 | 28.21 | -21.11 | 260.20 | -67.21 | 115.07 | 0.9509 | 289.2 | -38.4 | |
| 0.00 | 1.34 | 0.00 | 2.08 | -20.40 | 260.35 | -67.07 | 114.38 | 0.9491 | 358.0 | 309.2 | |
| 0.00 | 3.76 | 0.00 | 5.97 | -20.58 | 259.93 | -67.49 | 114.45 | 0.9514 | -134.0 | -47.6 | |
| 0.00 | 4.12 | 0.00 | 6.82 | -20.75 | 259.07 | -68.34 | 114.41 | 0.9557 | -5.0 | 9.3 | |
| 0.00 | 6.36 | 0.00 | 10.92 | -19.77 | 258.12 | -69.30 | 113.18 | 0.9589 | -651.0 | -403.5 | |
| 0.00 | 0.99 | 0.00 | 1.92 | -20.47 | 256.12 | -71.29 | 113.42 | 0.9681 | -217.0 | -179.0 | |
| 0.00 | 7.98 | 0.00 | 14.84 | -19.11 | 256.47 | -70.95 | 112.13 | 0.9653 | -540.0 | -471.7 | |
| 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. | |