SDO HMI 2014-04-20 17:00:34 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 | 15.79 | 0.00 | 8.62 | -20.17 | 163.71 | -20.09 | 129.68 | 0.4189 | -754.6 | -621.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 17:00:34 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 | 1.15 | 0.00 | 0.60 | -17.43 | 170.74 | -13.06 | 134.88 | 0.3056 | -866.0 | -676.9 | |
| 0.00 | 2.31 | 0.00 | 1.22 | -18.32 | 168.02 | -15.78 | 131.81 | 0.3479 | -846.0 | -762.9 | |
| 0.00 | 1.33 | 0.00 | 0.70 | -18.28 | 167.69 | -16.11 | 131.18 | 0.3515 | -772.0 | -649.5 | |
| 0.00 | 0.98 | 0.00 | 0.53 | -23.44 | 167.11 | -16.70 | 140.27 | 0.4141 | -732.0 | -547.8 | |
| 0.00 | 1.51 | 0.00 | 0.84 | -22.64 | 161.53 | -22.27 | 131.23 | 0.4670 | -618.0 | -529.1 | |
| 0.00 | 1.68 | 0.00 | 0.94 | -22.20 | 161.54 | -22.27 | 130.46 | 0.4630 | -830.0 | -694.2 | |
| 0.00 | 2.04 | 0.00 | 1.13 | -20.91 | 161.54 | -22.26 | 128.11 | 0.4517 | -658.0 | -506.6 | |
| 0.00 | 2.13 | 0.00 | 1.18 | -20.61 | 161.23 | -22.57 | 127.23 | 0.4530 | -825.0 | -658.0 | |
| 0.00 | 1.42 | 0.00 | 0.79 | -19.28 | 160.57 | -23.23 | 123.97 | 0.4508 | -599.0 | -539.4 | |
| 0.00 | 1.24 | 0.00 | 0.69 | -18.46 | 160.35 | -23.46 | 122.14 | 0.4477 | -800.0 | -584.8 | |
| 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. | |