SDO HMI 2014-08-17 15:00:38 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 |
| 1.08 | 7.74 | 0.57 | 4.20 | 7.88 | 26.80 | -23.95 | 86.16 | 0.4054 | -147.0 | -82.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-17 15:00:38 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 |
| 1.08 | 1.53 | 0.57 | 0.81 | 5.51 | 30.25 | -20.50 | 92.32 | 0.3504 | -25.6 | -16.8 | |
| 0.00 | 0.99 | 0.00 | 0.53 | 5.79 | 28.96 | -21.79 | 91.28 | 0.3710 | -585.0 | -515.1 | |
| 0.00 | 1.26 | 0.00 | 0.67 | 9.29 | 28.38 | -22.37 | 81.94 | 0.3809 | -770.0 | -617.0 | |
| 0.00 | 0.90 | 0.00 | 0.48 | 5.95 | 28.56 | -22.19 | 90.78 | 0.3773 | -434.0 | -442.9 | |
| 0.00 | 0.63 | 0.00 | 0.34 | 9.84 | 26.53 | -24.22 | 80.96 | 0.4110 | -544.0 | -490.1 | |
| 0.00 | 1.53 | 0.00 | 0.86 | 9.41 | 22.62 | -28.13 | 82.63 | 0.4710 | 672.0 | 559.7 | |
| 0.00 | 0.90 | 0.00 | 0.51 | 9.86 | 22.54 | -28.21 | 81.68 | 0.4726 | 710.0 | 578.0 | |
| 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. | |