SDO HMI 2014-07-20 00:00:40 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 |
| 8.62 | 13.70 | 5.69 | 9.06 | 6.79 | 110.87 | 41.59 | 274.85 | 0.6638 | 748.8 | 576.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-20 00:00:40 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 | 1.09 | 0.00 | 0.73 | 6.20 | 111.44 | 42.16 | 273.96 | 0.6712 | 568.0 | 493.3 | |
| 2.54 | 12.61 | 1.68 | 8.33 | 6.80 | 111.01 | 41.73 | 274.87 | 0.6656 | 623.0 | 599.7 | |
| 2.36 | -2.00 | 1.56 | -2.00 | 6.97 | 110.78 | 41.50 | 275.12 | 0.6626 | 809.3 | 999999 | |
| 3.72 | -2.00 | 2.45 | -2.00 | 6.79 | 110.72 | 41.44 | 274.85 | 0.6618 | 870.2 | 999999 | |
| 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. | |