SDO HMI 2014-09-30 21:00:33 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 | 4.85 | 0.00 | 3.53 | 3.79 | 139.15 | -47.23 | 91.10 | 0.7345 | -116.8 | -164.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-30 21:00:33 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 | 1.50 | 0.00 | 1.05 | 4.00 | 141.35 | -45.03 | 91.10 | 0.7082 | -573.0 | -527.9 | |
| 0.00 | 1.06 | 0.00 | 0.75 | 2.67 | 140.57 | -45.81 | 92.84 | 0.7195 | -468.0 | -400.6 | |
| 0.00 | 0.79 | 0.00 | 0.58 | 3.81 | 138.83 | -47.55 | 91.01 | 0.7387 | -502.0 | -452.7 | |
| 0.00 | 0.53 | 0.00 | 0.40 | 4.10 | 136.93 | -49.45 | 90.39 | 0.7602 | 415.0 | 406.3 | |
| 0.00 | 0.97 | 0.00 | 0.75 | 4.45 | 136.06 | -50.32 | 89.83 | 0.7696 | 544.0 | 497.5 | |
| 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. | |