SDO HMI 2014-07-20 15:00:40 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 |
| 2.00 | 14.42 | 1.11 | 8.01 | 16.79 | 85.47 | 24.43 | 298.50 | 0.4524 | -73.5 | -226.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-20 15:00:40 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 | 5.35 | 0.00 | 3.00 | 16.90 | 86.57 | 25.53 | 297.76 | 0.4680 | -783.0 | -677.9 | |
| 2.00 | 4.63 | 1.11 | 2.57 | 16.40 | 85.79 | 24.76 | 297.38 | 0.4543 | -997.2 | -795.3 | |
| 0.00 | 1.36 | 0.00 | 0.75 | 17.12 | 83.91 | 22.87 | 300.55 | 0.4331 | 671.0 | 563.4 | |
| 0.00 | 3.08 | 0.00 | 1.69 | 17.06 | 83.73 | 22.69 | 300.61 | 0.4303 | 917.0 | 717.4 | |
| 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. | |