SDO HMI 2011-10-21 15:59:01 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 |
| 0.44 | 9.48 | 0.94 | 19.52 | -13.49 | 52.31 | 74.32 | 254.65 | 0.9712 | -139.9 | 31.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-21 15:59:01 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 |
| 0.44 | 4.96 | 0.94 | 10.66 | -11.83 | 53.32 | 75.33 | 256.50 | 0.9748 | -125.6 | 169.6 | |
| 0.00 | 1.04 | 0.00 | 2.03 | -14.24 | 51.19 | 73.21 | 253.71 | 0.9679 | 200.0 | 182.2 | |
| 0.00 | 1.74 | 0.00 | 4.21 | -18.09 | 53.62 | 75.64 | 250.21 | 0.9796 | -318.0 | -176.1 | |
| 0.00 | 1.74 | 0.00 | 2.62 | -12.30 | 46.95 | 68.97 | 254.96 | 0.9457 | -315.0 | -267.5 | |
| 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. | |