SDO HMI 2014-07-18 14:00:40 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 |
| 0.82 | 7.17 | 0.42 | 3.66 | 16.99 | 82.04 | -6.01 | 24.99 | 0.2379 | 182.4 | 202.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-18 14:00:40 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 | 0.73 | 0.00 | 0.37 | 16.54 | 82.99 | -5.07 | 22.29 | 0.2242 | -843.0 | -630.1 | |
| 0.00 | 1.63 | 0.00 | 0.83 | 17.00 | 82.85 | -5.21 | 22.03 | 0.2324 | -891.0 | -563.6 | |
| 0.82 | 1.91 | 0.42 | 0.97 | 17.22 | 82.13 | -5.92 | 24.29 | 0.2404 | 588.3 | 461.2 | |
| 0.00 | 1.54 | 0.00 | 0.79 | 16.84 | 81.31 | -6.74 | 27.93 | 0.2408 | 927.0 | 735.0 | |
| 0.00 | 1.36 | 0.00 | 0.70 | 17.09 | 81.27 | -6.78 | 27.57 | 0.2448 | 960.0 | 751.7 | |
| 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. | |