SDO HMI 2014-04-20 07:00:34 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 |
| 7.63 | 40.55 | 11.18 | 59.35 | -23.01 | 118.51 | -70.78 | 112.62 | 0.9429 | 501.5 | 349.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 07:00:34 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 |
| 5.77 | 31.32 | 8.35 | 45.18 | -23.08 | 118.81 | -70.48 | 112.70 | 0.9413 | 681.1 | 408.8 | |
| 0.00 | 0.98 | 0.00 | 1.47 | -23.43 | 117.96 | -71.33 | 113.03 | 0.9460 | 232.0 | 206.4 | |
| 1.86 | 3.90 | 2.83 | 5.93 | -22.90 | 117.82 | -71.48 | 112.46 | 0.9466 | 282.5 | 201.9 | |
| 0.00 | 3.37 | 0.00 | 5.25 | -22.66 | 117.28 | -72.01 | 112.19 | 0.9493 | 323.0 | 151.4 | |
| 0.00 | 0.98 | 0.00 | 1.52 | -22.30 | 117.21 | -72.08 | 111.80 | 0.9495 | 69.0 | 20.8 | |
| 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. | |