SDO HMI 2014-04-20 22:00:34 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 |
| 13.39 | 60.21 | 14.52 | 65.91 | -23.30 | 118.10 | -62.94 | 113.56 | 0.8936 | 617.7 | 382.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 22:00:34 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 | 2.84 | 0.00 | 3.06 | -25.24 | 118.86 | -62.17 | 115.80 | 0.8904 | 193.0 | 213.7 | |
| 10.82 | 46.82 | 11.67 | 50.34 | -23.20 | 118.63 | -62.41 | 113.49 | 0.8901 | 827.9 | 457.0 | |
| 0.00 | 1.06 | 0.00 | 1.18 | -23.91 | 117.79 | -63.24 | 114.20 | 0.8967 | 284.0 | 184.6 | |
| 2.57 | 5.41 | 2.85 | 5.99 | -23.17 | 117.78 | -63.25 | 113.36 | 0.8962 | 356.1 | 206.9 | |
| 0.00 | 2.22 | 0.00 | 2.50 | -22.83 | 117.19 | -63.85 | 112.92 | 0.9001 | 482.0 | 357.6 | |
| 0.00 | 1.86 | 0.00 | 2.84 | -23.41 | 109.50 | -71.54 | 113.00 | 0.9471 | -196.0 | -150.9 | |
| 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. | |