SDO HMI 2014-09-17 13:00:35 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 |
| 20.50 | 110.97 | 33.13 | 180.00 | 7.76 | 289.56 | -72.81 | 84.12 | 0.9528 | -307.9 | -68.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-17 13:00:35 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 |
| 8.52 | 59.30 | 13.83 | 97.63 | 10.01 | 289.26 | -73.11 | 81.74 | 0.9535 | -435.1 | -69.5 | |
| 2.49 | -1.00 | 4.14 | -1.00 | 10.00 | 288.72 | -73.66 | 81.70 | 0.9563 | 34.1 | 999999 | |
| 9.05 | 49.71 | 14.14 | 77.89 | 5.10 | 290.40 | -71.97 | 86.99 | 0.9498 | -331.8 | -69.1 | |
| 0.00 | 0.27 | 0.00 | 0.61 | 5.58 | 284.26 | -78.12 | 85.83 | 0.9775 | 122.0 | 124.0 | |
| 0.44 | 1.69 | 1.02 | 3.87 | 5.13 | 284.31 | -78.06 | 86.30 | 0.9775 | -61.0 | -61.3 | |
| 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. | |