SDO HMI 2011-12-11 02:58:55 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 |
| 22.83 | 145.86 | 13.59 | 86.91 | 18.12 | 61.59 | 28.80 | 304.62 | 0.5586 | -1117.4 | -411.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-11 02:58:55 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 | 1.36 | 0.00 | 0.87 | 20.27 | 66.89 | 34.11 | 303.73 | 0.6348 | -815.0 | -680.0 | |
| 0.00 | 1.36 | 0.00 | 0.88 | 21.60 | 66.82 | 34.03 | 305.62 | 0.6425 | -666.0 | -518.4 | |
| 0.00 | 0.60 | 0.00 | 0.37 | 19.76 | 65.15 | 32.37 | 304.24 | 0.6118 | -731.0 | -657.4 | |
| 22.83 | 142.54 | 13.59 | 84.79 | 18.05 | 61.47 | 28.68 | 304.62 | 0.5567 | -1201.2 | -405.4 | |
| 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. | |