SDO HMI 2011-08-27 10:59:08 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 |
| 0.00 | 7.72 | 0.00 | 4.02 | 18.49 | 0.66 | 13.96 | 311.39 | 0.3064 | -827.2 | -697.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-27 10:59:08 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 | 0.28 | 18.51 | 2.07 | 15.37 | 308.83 | 0.3240 | -729.0 | -558.7 | |
| 0.00 | 2.42 | 0.00 | 1.27 | 18.30 | 1.85 | 15.15 | 308.67 | 0.3192 | -832.0 | -749.9 | |
| 0.00 | 1.53 | 0.00 | 0.79 | 17.63 | 0.28 | 13.58 | 309.79 | 0.2926 | -986.0 | -757.8 | |
| 0.00 | 2.15 | 0.00 | 1.12 | 18.88 | 359.99 | 13.29 | 313.67 | 0.3020 | -788.0 | -660.0 | |
| 0.00 | 1.08 | 0.00 | 0.56 | 19.31 | 359.13 | 12.43 | 316.54 | 0.2967 | -801.0 | -637.5 | |
| 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. | |