SDO HMI 2011-08-29 22:59:08 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 |
| 8.42 | 15.86 | 5.98 | 11.27 | 18.21 | 359.42 | 45.76 | 288.49 | 0.7199 | -148.2 | -2.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-29 22:59:08 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 |
| 0.00 | 0.54 | 0.00 | 0.39 | 17.78 | 0.22 | 46.57 | 287.75 | 0.7284 | -477.0 | -403.7 | |
| 4.66 | 8.24 | 3.31 | 5.86 | 17.69 | 359.50 | 45.84 | 287.75 | 0.7200 | 727.3 | 526.2 | |
| 0.00 | 0.54 | 0.00 | 0.38 | 18.76 | 359.68 | 46.03 | 289.20 | 0.7239 | -373.0 | -434.3 | |
| 0.00 | 0.81 | 0.00 | 0.57 | 19.10 | 359.39 | 45.73 | 289.72 | 0.7211 | -585.0 | -519.2 | |
| 3.76 | 5.37 | 2.67 | 3.82 | 18.83 | 359.24 | 45.59 | 289.38 | 0.7190 | -736.8 | -536.8 | |
| 0.00 | 0.36 | 0.00 | 0.25 | 18.83 | 358.51 | 44.86 | 289.52 | 0.7107 | -484.0 | -475.8 | |
| 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. | |