SDO HMI 2014-04-18 14:00:34 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 |
| 0.00 | 6.37 | 0.00 | 4.83 | -20.02 | 164.74 | -47.13 | 113.52 | 0.7527 | -311.3 | -301.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 14:00:34 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 |
| 0.00 | 0.97 | 0.00 | 0.59 | -30.51 | 185.63 | -26.24 | 138.70 | 0.5794 | 683.0 | 576.5 | |
| 0.00 | 0.97 | 0.00 | 0.67 | -26.79 | 171.40 | -40.47 | 123.66 | 0.6983 | -460.0 | -397.8 | |
| 0.00 | 1.06 | 0.00 | 0.82 | -18.81 | 162.07 | -49.80 | 110.08 | 0.7720 | -625.0 | -488.6 | |
| 0.00 | 0.80 | 0.00 | 0.63 | -19.36 | 161.49 | -50.38 | 110.67 | 0.7790 | -518.0 | -423.1 | |
| 0.00 | 0.35 | 0.00 | 0.28 | -19.49 | 160.57 | -51.30 | 110.66 | 0.7885 | -337.0 | -330.2 | |
| 0.00 | 0.89 | 0.00 | 0.76 | -21.88 | 157.77 | -54.10 | 113.10 | 0.8193 | -440.0 | -380.9 | |
| 0.00 | 1.33 | 0.00 | 1.08 | -10.21 | 159.12 | -52.75 | 98.79 | 0.7949 | -482.0 | -443.6 | |
| 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. | |