SDO HMI 2011-08-16 15:59:09 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 |
| 0.00 | 7.83 | 0.00 | 4.64 | -24.75 | 139.99 | 10.68 | 198.23 | 0.5503 | 751.2 | 578.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-16 15:59:09 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 | 0.90 | 0.00 | 0.51 | -19.68 | 143.35 | 14.04 | 207.39 | 0.4985 | 742.0 | 619.1 | |
| 0.00 | 1.08 | 0.00 | 0.62 | -20.88 | 142.49 | 13.18 | 204.86 | 0.5089 | 699.0 | 554.3 | |
| 0.00 | 1.71 | 0.00 | 1.03 | -25.52 | 141.79 | 12.48 | 200.19 | 0.5674 | 763.0 | 578.4 | |
| 0.00 | 1.08 | 0.00 | 0.64 | -24.99 | 140.61 | 11.30 | 198.75 | 0.5545 | 767.0 | 579.4 | |
| 0.00 | 1.53 | 0.00 | 0.92 | -26.97 | 137.10 | 7.80 | 192.33 | 0.5685 | 762.0 | 557.2 | |
| 0.00 | 1.53 | 0.00 | 0.92 | -26.90 | 136.89 | 7.58 | 192.03 | 0.5668 | 774.0 | 591.9 | |
| 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. | |