SDO HMI 2014-09-21 23:00:34 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 | 8.69 | 0.00 | 4.89 | -9.77 | 326.94 | 22.88 | 233.41 | 0.4763 | -232.2 | -338.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-21 23:00:34 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 | 0.89 | 0.00 | 0.58 | -12.89 | 339.94 | 35.89 | 240.86 | 0.6565 | 561.0 | 481.3 | |
| 0.00 | 1.51 | 0.00 | 0.84 | -8.26 | 326.66 | 22.61 | 236.15 | 0.4600 | -601.0 | -525.5 | |
| 0.00 | 0.89 | 0.00 | 0.50 | -12.20 | 326.79 | 22.74 | 229.66 | 0.4977 | 643.0 | 456.9 | |
| 0.00 | 3.54 | 0.00 | 1.94 | -7.89 | 324.78 | 20.72 | 234.46 | 0.4326 | -644.0 | -561.9 | |
| 0.00 | 1.06 | 0.00 | 0.59 | -11.72 | 324.07 | 20.02 | 226.78 | 0.4619 | -773.0 | -672.8 | |
| 0.00 | 0.80 | 0.00 | 0.44 | -11.49 | 323.86 | 19.81 | 226.85 | 0.4571 | -579.0 | -540.0 | |
| 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. | |