SDO HMI 2011-08-30 14:59:08 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 |
| 27.23 | 175.00 | 13.80 | 88.69 | 18.17 | 299.70 | -5.16 | 24.01 | 0.2109 | -1066.9 | -425.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-30 14:59:08 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 | 2.06 | 0.00 | 1.03 | 14.07 | 301.98 | -2.88 | 22.00 | 0.1307 | -975.0 | -739.3 | |
| 27.23 | 168.19 | 13.80 | 85.24 | 18.22 | 299.75 | -5.11 | 23.74 | 0.2112 | -1251.1 | -424.4 | |
| 0.00 | 0.99 | 0.00 | 0.50 | 17.21 | 298.06 | -6.80 | 32.80 | 0.2098 | -694.0 | -519.5 | |
| 0.00 | 0.99 | 0.00 | 0.50 | 18.40 | 297.34 | -7.53 | 32.35 | 0.2333 | -905.0 | -639.4 | |
| 0.00 | 1.43 | 0.00 | 0.73 | 18.28 | 297.28 | -7.58 | 32.85 | 0.2321 | -1058.0 | -865.6 | |
| 0.00 | 1.34 | 0.00 | 0.69 | 18.30 | 295.21 | -9.65 | 39.19 | 0.2529 | 839.0 | 614.1 | |
| 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. | |