SDO HMI 2011-08-17 16:59:09 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 |
| 9.90 | 27.81 | 5.39 | 15.17 | -18.05 | 114.48 | -1.05 | 177.56 | 0.4225 | 309.8 | -156.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-17 16:59:09 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 | 0.81 | 0.00 | 0.44 | -18.37 | 117.01 | 1.47 | 183.30 | 0.4267 | 842.0 | 705.7 | |
| 0.00 | 3.15 | 0.00 | 1.73 | -18.67 | 116.95 | 1.41 | 183.12 | 0.4314 | 862.0 | 675.2 | |
| 1.71 | 5.31 | 0.93 | 2.90 | -18.20 | 116.75 | 1.22 | 182.74 | 0.4238 | 945.5 | 884.0 | |
| 2.07 | -3.00 | 1.13 | -3.00 | -18.37 | 116.72 | 1.19 | 182.65 | 0.4265 | 835.1 | 999999 | |
| 0.00 | 1.08 | 0.00 | 0.59 | -18.50 | 115.38 | -0.16 | 179.65 | 0.4282 | 385.0 | 382.8 | |
| 3.33 | 12.33 | 1.82 | 6.73 | -18.14 | 113.66 | -1.88 | 175.76 | 0.4235 | -874.2 | -771.1 | |
| 2.79 | 3.51 | 1.51 | 1.90 | -17.01 | 112.87 | -2.66 | 173.70 | 0.4067 | 836.9 | 730.9 | |
| 0.00 | 1.62 | 0.00 | 0.88 | -17.17 | 110.16 | -5.37 | 167.54 | 0.4162 | -676.0 | -532.2 | |
| 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. | |