SDO HMI 2014-08-23 16:00:38 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 |
| 16.98 | 90.46 | 15.61 | 82.87 | 16.56 | 28.70 | 57.79 | 285.24 | 0.8425 | -531.0 | -170.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-23 16:00:38 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 |
| 16.98 | 87.49 | 15.61 | 80.57 | 16.53 | 28.91 | 58.00 | 285.18 | 0.8445 | -788.8 | -190.5 | |
| 0.00 | 0.90 | 0.00 | 0.70 | 17.74 | 21.95 | 51.04 | 287.23 | 0.7777 | 415.0 | 363.2 | |
| 0.00 | 1.08 | 0.00 | 0.84 | 17.90 | 21.56 | 50.65 | 287.48 | 0.7738 | 516.0 | 340.3 | |
| 0.00 | 0.27 | 0.00 | 0.21 | 18.19 | 21.07 | 50.16 | 287.93 | 0.7690 | 442.0 | 448.0 | |
| 0.00 | 0.72 | 0.00 | 0.55 | 17.05 | 20.58 | 49.68 | 286.50 | 0.7625 | 528.0 | 509.0 | |
| 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. | |