SDO HMI 2013-09-20 20:59:04 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 |
| 66.67 | 379.75 | 46.36 | 264.29 | -17.67 | 58.46 | -37.47 | 124.27 | 0.7035 | 941.5 | 296.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2013-09-20 20:59:04 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 | 1.33 | 0.00 | 0.90 | -17.63 | 60.51 | -35.41 | 125.67 | 0.6821 | 303.0 | 316.1 | |
| 63.22 | 363.10 | 43.76 | 251.79 | -17.66 | 58.74 | -37.19 | 124.43 | 0.7006 | 1210.4 | 335.6 | |
| 0.44 | -2.00 | 0.31 | -2.00 | -18.27 | 57.34 | -38.59 | 124.22 | 0.7186 | 410.2 | 999999 | |
| 0.00 | 2.12 | 0.00 | 1.54 | -18.93 | 56.54 | -39.39 | 124.48 | 0.7305 | -766.0 | -596.3 | |
| 0.00 | 2.57 | 0.00 | 1.96 | -19.53 | 53.35 | -42.58 | 123.22 | 0.7645 | -636.0 | -605.1 | |
| 0.00 | 1.15 | 0.00 | 0.88 | -17.24 | 52.41 | -43.51 | 120.00 | 0.7616 | -606.0 | -428.8 | |
| 1.77 | 3.19 | 1.35 | 2.42 | -16.86 | 52.31 | -43.62 | 119.49 | 0.7608 | -853.8 | -715.4 | |
| 0.00 | 3.81 | 0.00 | 2.91 | -16.98 | 52.01 | -43.92 | 119.47 | 0.7643 | -691.0 | -525.0 | |
| 1.24 | 2.48 | 0.94 | 1.89 | -16.30 | 51.99 | -43.94 | 118.65 | 0.7612 | -696.9 | -626.6 | |
| 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. | |