SDO HMI 2011-05-01 17:59:07 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 |
| 4.81 | 49.76 | 15.94 | 179.50 | 20.69 | 183.16 | 79.34 | 291.65 | 0.9897 | 260.5 | 42.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-05-01 17:59:07 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 | 3.39 | 0.00 | 14.48 | 19.97 | 185.06 | 81.25 | 290.70 | 0.9935 | -307.0 | -224.6 | |
| 4.81 | 44.76 | 15.94 | 159.02 | 20.70 | 182.96 | 79.14 | 291.68 | 0.9893 | 325.9 | 69.7 | |
| 0.00 | 0.45 | 0.00 | 1.66 | 21.88 | 183.87 | 80.06 | 292.75 | 0.9917 | 84.0 | 120.6 | |
| 0.00 | 1.16 | 0.00 | 4.34 | 22.25 | 183.97 | 80.16 | 293.10 | 0.9920 | -39.0 | 13.2 | |
| 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. | |