SDO HMI 2011-02-12 16:58:57 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 |
| 18.13 | 43.13 | 10.53 | 25.07 | 19.22 | 34.65 | -18.36 | 34.56 | 0.5264 | -500.1 | -198.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-12 16:58:57 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 |
| 13.86 | 23.70 | 8.05 | 13.76 | 19.44 | 35.28 | -17.73 | 33.42 | 0.5236 | -1015.2 | -489.4 | |
| 1.45 | 9.33 | 0.84 | 5.40 | 18.89 | 35.14 | -17.87 | 34.25 | 0.5180 | -925.4 | -672.1 | |
| 2.14 | -2.00 | 1.24 | -2.00 | 18.87 | 34.72 | -18.30 | 34.89 | 0.5214 | -630.3 | 999999 | |
| 0.00 | 1.97 | 0.00 | 1.14 | 18.45 | 33.68 | -19.34 | 36.87 | 0.5256 | 914.0 | 769.3 | |
| 0.68 | 2.48 | 0.40 | 1.45 | 19.15 | 33.39 | -19.62 | 36.44 | 0.5362 | -678.9 | -592.8 | |
| 0.00 | 2.91 | 0.00 | 1.70 | 18.58 | 33.00 | -20.02 | 37.66 | 0.5331 | 635.0 | 616.8 | |
| 0.00 | 1.37 | 0.00 | 0.81 | 20.44 | 32.76 | -20.26 | 35.84 | 0.5564 | 741.0 | 523.8 | |
| 0.00 | 1.37 | 0.00 | 0.81 | 19.21 | 31.31 | -21.71 | 39.14 | 0.5555 | 625.0 | 501.6 | |
| 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. | |