SDO HMI 2014-09-21 08:00:34 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 |
| 2.48 | 11.00 | 2.18 | 9.83 | 15.78 | 9.25 | 56.94 | 284.27 | 0.8343 | -125.9 | -72.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-21 08:00:34 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 | 0.27 | 0.00 | 0.25 | 15.74 | 10.79 | 58.47 | 284.17 | 0.8483 | -290.0 | -336.0 | |
| 0.00 | 0.53 | 0.00 | 0.49 | 15.86 | 10.78 | 58.47 | 284.32 | 0.8483 | -396.0 | -322.7 | |
| 0.00 | 1.42 | 0.00 | 1.30 | 15.32 | 10.36 | 58.04 | 283.69 | 0.8443 | -373.0 | -399.3 | |
| 0.00 | 0.89 | 0.00 | 0.81 | 15.57 | 10.29 | 57.98 | 283.99 | 0.8438 | -552.0 | -480.4 | |
| 0.00 | 1.33 | 0.00 | 1.21 | 15.88 | 9.96 | 57.65 | 284.37 | 0.8409 | -582.0 | -462.6 | |
| 2.48 | 6.56 | 2.18 | 5.77 | 15.88 | 8.51 | 56.20 | 284.42 | 0.8275 | 591.2 | 321.5 | |
| 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. | |